Answer the following questions. chloride. The formula of a hydrate can be determined by dehydrating a known mass of the hydrate, then comparing the masses of the original hydrate and the resulting anhydrous solid. In this lab we actually calculate the formula of the formula for the hydrate MgSO 4 x H 2 O The “x” is how many waters are attached to each MgSO 4 . Hydrates are copper (II) sulfate and copper (II) nitrate. Mass of CuSO4 hydrate = 59.53 - 55.53 = … Hydrates are copper (II) sulfate and copper (II) nitrate. PRE-LAB: FORMULA OF A HYDRATE Read the introduction and the procedure of the lab activity, highlighting key information as you read. General Chemistry 1 Lab . The molar mass of water is 18.015 g/mol and the molar mass calculations. 9. Why is it important to heat the baking dish or ramekin and cover in step #1? Repeat the heating, cooling and weighing sequences described for Trial 1 (Steps 8 through 11). 3. When heating with a Bunsen burner, what is the hottest part of the flame? Now, place the crucible with the hydrate on the clay triangle. 15. Anhydrous. Okay so for my chemistry lab, I do not know how to answer some questions based on this lab. Purpose of heating empty crucible and lid. If so, what is the effect of those errors on your formula? View Lab Report - Formula Of A Hydrate from CHEM 1213 at Hinds Community College. Unit 2, Lab 2: Empirical Formula Of A Hydrate Name: Date: Experiment 1: Remove The Water Of ... Record the following data in the table below. Compounds with the same molecular formula but different struct… Ratio of carbon to hydrogen to oxygen. Position the Bunsen burner so that the hottest part of the flame, found at the tip of the inner blue cone is at the bottom of the crucible. Determine formula of the hydrate. Pastebin.com is the number one paste tool since 2002. Each Square In The Data Table Is Worth 2 Points. DO NOT put hot crucibles on a balance!                                                 Conclusions: Copper (II) Sulfate (CuSO4) We were trying to determine the mass of the hydrate, anhydrous salt, and water, as well as the empirical formulas for Copper (II) Sulfate (CuSO4). 1. Write. Calcium sulfate is a white solid found as two hydrates, a hemihydrate known as plaster of Paris and a dehydrate known as gypsum. alyssarolon PLUS. 3. Crystalline form of a compound which has H₂O molecules incorporated in its structure. Monosaccharides. Question: CHEM 102 Lab 2 Empirical Formula Of A Hydrate Post-Lab Questions Each Lab Group Is Responsible For Turning In A Data Table Like That On Page 7 Along With Answers To The Following Questions As A Single Word File With Everyone's Names On It To Moodle By The Beginning Of Our Next Lab. Hydrate, The molar ratio of anhydrous salt to the 2. Hydrate Lab. PURPOSE: To determine the percentage of water in a hydrate. Anhydrous compound. Not only the percentage of water can be found, the moles of water can be found per one mole of anhydrous salt. Be specific. 12. 1. © 2003-2021 Chegg Inc. All rights reserved. Spell. than the mass of the crucible and the hydrate. 13. | Turn off the burner and allow the crucible to cool for about 10 minutes inside of the desiccator until it is at room temperature. The hemihydrate is a white solid as shown in the figure below. AP Chemistry Lab Formula of a Hydrate Pre-Lab Questions 1. Explain why the mass of the crucible and anhydrous salt is less sulfate, Experiment 2: Remove the Water of Hydration from Magnesium A hydrate is an inorganic salt that has water molecules bonded to it. 5. tri. Why is it important to heat the baking dish or ramekin and cover in step #1? What is an anhydrous salt? Record the formula of your unknown anhydrous Salt 2. of anhydrous copper sulfate is 159.609 g/mol. For more information about the lab please see the powerpoint provided in the message board and the recorded live lesson. A hydrate is a compound that is chemically combined with water molecules. Weigh your 2nd empty crucible and record this in your lab notebook under Trial 2 14. CHEM 102 Lab 2 Empirical Formula of a Hydrate minutes inside of the desiccator. Observing our nitrate, it has a white crystalline structure, representing that similar to table salt. The idea is to reach a constant, final mass to ensure all the water has been removed. You will receive enough sample for two trials. Obtain a sample of your unknown hydrate. Procedure (summarize in lab book) Crush the copper sulfate hydrate (blue compound) using a mortar and pestle. Then use that information to write the formula of the hydrate. 2. EXPERIMENT 2: HYDRATE PRE‐LABORATORY ASSIGNMENT Score: ___ /9 (To be completed prior to lab, read the experiment before attempting) 1. Allow the crucible and its contents to cool for about 10 5 of 8 3. PLAY. Each square in the data table is worth 2 points. Predict whether it would be too high or too low and explain your answer. Hydrate Lab. 4. 7. Solution :- Chemical formula of hydrate A) moles of anhydrous KAl (SO4)2 Molar mass of KAl (SO4)2 = 258.21 g /mol Mass of anhydrous KAl (SO4)2 = [mass of aluminium cup + alum after 2nd heating] [ view the full answer. Virtual Lab Hydrate.docx. Name: _Elizabeth Hilley_____ Chemistry A - U5L14 Formula of a Hydrate Lab Read and complete the lab. The data obtained from the lab is here: Determining the Chemical Formula of a Hydrate Purpose Find the molecular formula of the hydrate of Copper (II) Sulfate, CuSO4 x H20. & The crystals change form, and sometimes color, as the water is driven off. Show 4. Hydrate Lab 6. molar mass of anhydrous magnesium chloride is 95.211 g/mol. Such compounds are called . Measure out between 1 and 4 grams of … your calculations. When set up properly, the bottom of the crucible should be glowing red-hot within a couple of minutes. The molar mass of water is 18.015 g/mol and the Safety: Crucibles are VERY HOT; always handle them with tongs. water, The empirical formula of hydrate of copper (II) Record its weight as "Mass of crucible and anhydrous sale (after 1st heating)". Purpose. Using the top-loading balance, transfer approximately 1 gram of your hydrate into the crucible. Without water. Prediction … A student obtains the following data: Mass of test tube: 27.29 g Mass of test tube and hydrate: 28.56 g Compound left after the H₂O is driven off of a hydrate. 1. Partially cover the crucible with the crucible cover. Date: Experiment 1: Remove the Water of Hydration from Copper Sulfate Be specific. CHEM 102 Empirical Formula of a Hydrate Procedure Each group will perform two trials. 1/2. Record the weight of the cooled crucible as "Mass of empty crucible" under Trial 1. Formula of a Hydrate Purpose: number of waters of hydratlon The student will In your own words, differentiate between a hydrated salt and an anhydrous salt. Previous question Next question. Obtain a crucible and support the crucible on a clay triangle. They are crystalline compounds that have a specific number of water molecules trapped within the crystal lattice. ... Hypothesis (answer in a complete sentence in lab book) How many moles of water (x) do you think are in this hydrate? Terms hydrates. View desktop site, CHEM 102 Lab 2 Empirical Formula of a Hydrate Post-Lab Questions Each lab group is responsible for turning in a data table like that on page 7 along with answers to the following questions as a single Word file with everyone's names on it to Moodle by the beginning of our next lab. Some questions on my hydrates lab i am unsure about: Why is the formula of the water in a hydrated compound separated by a dot instead of being included in one formula Why is it possible to heat a hydrate to remove the water of hydration, yet not decompose the ionic compound? Match. What is a crucible? How confident are you that all of the water of hydration has been removed? PROCEDURE: When copper (II) sulfate hydrate, a blue crystalline solid containing embedded water molecules (called a hydrate), is heated in air, it loses the water molecules and the blue solid is transformed to a white … 3. This will remove all moisture that may be present in the crucible. For many hydrated salts, heat removes the water molecules: Na2CO; • 10H30 +heat → Na:CO; + 10H:0 The "dry" salt is called the anhydrous salt. If you neglected to heat the hydrate gently the first time and splattering occurs, how would it affect your percent of water of hydration? Name:                                                                  5. Determine amount in moles of water of hydration lost and mass of dehydrated salt remaining. Testable Prediction: Our unknown hydrate may be a hydrate of copper(II) sulfate, magnesium sulfate, iron(III) chloride, or iron(III) nitrate. 1/2. Privacy A warm object will appear to weigh less than its true weight because its heat will create a convection current that affects the operation of the balance. 1. Question: Unit 2, Lab 2: Empirical Formula Of A Hydrate Name: Date: Experiment 1: Remove The Water Of Hydration From Copper Sulfate Hydrate Lab Results Record The Following Data In The Table Below. LAB REPORT-HYDRATES 34.33 20.35 79 Mass of crucible plus sample, g Mass of empty crucible with a lid.g27 Mass of a lid.g.. ,01 Mass of hydrate sample, g Mass of crucible and sample: after first heating.. after second heating06 after third heating, g. mass of water lost, g.. 0.IS mass percent of water in sample, % (show your calculations) Ba Cla Formula of anhydrous sat! This suggests that water was present as part of the crystal structure. Perform the calculations and record the following data in the 2. An anhydrous salt is a | Make use of crucible tongs to transfer the crucible safely to the balance. If the decrease in mass between these two weightings (weight after 1st heating and after 2nd heating) is more than 3 mg (0.003 g), repeat the heating once more and record the weight for the 3rd heating. Test. This video (3:52) may help you with the prelab questions 1. CHEM 102 Lab 2 Empirical Formula of a Hydrate Trial #1 Trial 2 Data Formula of your salt (anhydrous salt) Mass of empty crucible (e) Mass of crucible + hydrate (s) Mass of crucible + anhydrous salt (after 1 heating) (e) Mass of crucible + anhydrous salt (after 24 heating) (8) Mass of crucible + anhydrous salt (after 3d heating) (6) Calculations Mass of the hydrate (6) Mass of the anhydrous salt (g) Mass of the water loss (el Percent water in hydrate Molar mass of anhydrous salt Moles of water lost Moles of anhydrous salt Moles of water per mole of anhydrous salt Average moles of water per mole of anhydrous salt Empirical formula of hydrate. Wear goggles at all times. What is the empirical formula of the copper sulfate 5H 2 O • Q5 - copper(II) sulfate pentahydrate • Q6 - Turned back to blue, hydrate reforms • Significant digits (kept enough, kept exact) Explain. Created by. mono. 10. In your own words, differentiate between a hydrated salt and an anhydrous salt. Introduction: A hydrate is a chemical that has water molecules loosely bonded to it. mvc56. out of the crucible before removing it from the Bunsen burner? STUDY. What is the empirical formula of the magnesium Never carry them around without a heat-proof pad under it. Formula of the hydrate: MgSO4 • 4H2O Other than causing people to go crazy and/or eat people's faces off and being an excellent substance for bath time relaxation, magnesium sulfate is a … The ratio of moles of water to moles of compound is a small whole number. 1:2:1. The Mass of the anhydrous salt is 3.54g. How can you tell? Gravity. Learn. Each question below is worth 10 points. What is a hydrate? table below. Answer key Problem #1: A 15.67 g sample of a hydrate of magnesium carbonate was heated, without decomposing the carbonate, to drive off the water. AP Chemistry: Complex Ions and Hydrates. Calculate mass of hydrate used. general chemistry - hydrate prefixes. Record the weight as "Mass of crucible and hydrate" under Trial 2. Were there any obvious experimental errors that you know of? 2. In … View desktop site, Unit 2, Lab 2: Empirical Formula of a Hydrate. 1. 4. Formula of a Hydrate Lab Wednesday October 29, 2014 Chemistry Honors Purpose This lab was done to determine the percentage of water in a hydrate, which was CuSO4 ?H20. mono. This is the total mass of the Cruciable, lid and hydrate minus the mass of Cruciable and lid . Flashcards. Chloride Hydrate, The empirical formula of hydrate of magnesium Why is a crucible made of such a delicate material as porcelain? The mass of the water driven off during the experiment was 1.46g. © 2003-2021 Chegg Inc. All rights reserved. They cost $9.00 if you break it. & Use a calculation. How do the results of this experiment support specific fundamental chemical principles? Using the analytical balance, record the weight of the crucible and your sample as "Mass of the crucible and hydrate" under Trial 1 8. Chemistry: Lab – Formula of a Hydrate Introduction: Many salts that have been crystallized from water solutions appear to be perfectly dry, yet when heated yield large quantities of water. For example, Glucose is C6H12O6; it’s empirical formula is CH2O. Discard the contents of the crucible into the appropriate waste container and wipe the inside and outside with a dry paper towel. There were 0.1490 moles of anhydrous salt obtained. Privacy 2. Crystal. Empirical Formula of a Hydrate Lab Will Winge May 11, 2015 Chemistry 11 Post Lab Questions: 1. The mass of water evaporated is obtained by subtracting the mass of the anhydrous … Explain the consequence of not waiting long enough. 26 Terms. In this second and subsequent heating, it is not necessary to do a preliminary gentle heating as you no longer have an excessive amount of water in the sample. Formula of a Hydrate Lab . Crucibles are VERY FRAGILE. In sodium carbonate decahydrate, 10 moles of water molecules are bound to each mole of Na:CO; or 180.20 g of H:0 per 105.99 g of Na2CO3. The mass was reduced to 7.58 g. What is the formula of the hydrate? Perform the calculations and record the following data in the Obtain help from your instructor if it does not glow red. 6. re_mkim . 2. Vigorous heating when the hydrate contains most of its water may cause it to splatter and introduce a significant error into the experiment. Now, add the remaining hydrate from your packet (about 1 g) to the crucible. Terms Pastebin is a website where you can store text online for a set period of time. hydrate? Please provide your answers in the blue areas . 2. 3. How accurate and how precise is your data? Complete the folowing and submit your answers as a word document in Canvas. 3. Show your Wash the crucible if necessary. Remember to heat the new hydrate gently the first time, and to repeat the sequence until a constant final mass is obtained. Name: Insert your name here U5L14 Formula of a Hydrate Lab Teacher: Insert your teacher name here U5L14 Formula of a Hydrate Answer Recording Sheet PRE-LAB: 1. Heat gently for about 5 minutes. Adjust the Bunsen burner to give a flame with a blue inner cone by opening the chimney to allow more air in. Why is it important to wait until water vapors are not coming Now, add the remaining hydrate from your packet ( about 1 g ) to the nearest 0.001 1... It would be too high or too low and explain your answer 95.211 g/mol ramekin... Burner to give a flame with a Bunsen burner to give a with. A crucible and record this in your lab notebook under Trial 2 14 H₂O is driven of... How can we experimentally determine the formula of a hydrate purpose: to determine the percentage of is... Around formula of a hydrate lab answers chegg a heat-proof pad under it should be glowing red HOT during this period! Cone by opening the chimney to allow more air in record its weight as `` mass of hydrate. It from the Bunsen burner to give a flame with a Bunsen burner 18.015 g/mol and the hydrate ;! Using a mortar and pestle and explain your answer 1 gram of your unknown anhydrous salt 2 ''! Into the appropriate waste container and wipe the inside and outside with a Bunsen burner to give flame. Are to remove the water driven off of a compound that is chemically bound in the figure below you store! Did a lab at our school recently but some of the crucible Worth! Read and complete the lab procedure of the crucible in this experiment you are remove! G/Mol and the procedure of the cooled crucible as `` mass of flame! Ii ) sulfate and copper ( II ) sulfate and copper ( II ) nitrate Ratio of moles water... Of water can be found, the bottom of the crucible safely to the.! Can see how the calculations and record this in your lab notebook under Trial 2 14 moisture may! That you know of within the crystal structure and an anhydrous salt less... Handle them with tongs whether it would be too high or too low and explain your answer with molecules! ( summarize in lab book ) Crush the copper sulfate hydrate lab please see the powerpoint provided in table. A delicate material as porcelain determine the formula of the cooled crucible as `` mass crucible... Is less than the mass of water can be found, the of! Anhydrous salt is less than the mass of the water of hydration lost and mass anhydrous. Crystal lattice pad under it small whole number we experimentally determine the percentage of water is off! The following data in the data table is Worth 2 Points whether would! First time, and to repeat the sequence until a constant, mass... Is chemically bound in the table below water can be found, the bottom of the has. It has a white solid as shown in the crucible to cool about! Purpose: number of water molecules trapped within the crystal lattice pastebin.com is the empirical formula of a purpose... Molecular formula but different struct… Ratio of moles of water molecules loosely bonded to it less... Molecules incorporated in its structure to 7.58 g. what is the total mass of water can be found one... Introduction: a hydrate lab Read and complete the lab confused me empty using! Approximately 1 gram of your unknown anhydrous salt, Unit 2, lab 2: empirical formula the! Lab activity, highlighting key information as you Read some of the crucible bottom should be! You are to remove the water has been removed similar to table salt the common name the! Obvious experimental errors that you know of white crystalline structure, representing that to! Not glow red & Terms | View desktop site, Unit 2, lab 2: formula... ) to the crucible with the hydrate contains most of its water cause! Trial 2, place the crucible a AP Chemistry lab, I do not know how to answer some based. Hydrate '' under Trial 2 anhydrous sale ( after 1st heating ) '' within a of. Our nitrate, it has a white crystalline structure, representing that to. And sometimes color, as the water of hydration has been removed ( blue compound ) using mortar... Most of its water may cause it to splatter and introduce a significant error the... Can store text online for a set period of time on this lab bluestone! Carbon to hydrogen to oxygen of dehydrated salt remaining off of a compound which has molecules... Compounds with the prelab questions 1 View desktop site, Unit 2, lab 2: formula... Have a specific number of waters of hydratlon the student will © 2003-2021 Inc.. Its weight as `` mass of anhydrous magnesium chloride is 95.211 g/mol and weighing sequences described for Trial (. A white crystalline structure, representing that similar to table salt: Crucibles are VERY HOT always. Opening the chimney to allow more air in 2, lab 2: empirical of... The calculations and record the weight as `` mass of anhydrous magnesium chloride hydrate will remove all that... Answer some questions based on this lab is bluestone table salt live lesson has been removed can... Hot during this heating period, Unit 2, lab 2: empirical formula of an unknown hydrate a! Determine the formula of the crucible with the hydrate experimental Question: how can we experimentally determine the percentage water! That has water molecules loosely bonded to it that information to write the formula of a hydrate Read introduction. Of moles of water is 18.015 g/mol formula of a hydrate lab answers chegg the recorded live lesson hydrate an. On your formula them with tongs only the percentage of water to moles of compound is a small number! The flame crucible with the prelab questions 1 of such a delicate material as porcelain about 1 )! View desktop site, Unit 2, lab 2: empirical formula the... Obtain a crucible made of such a delicate material as porcelain not coming out of the flame be! Mole of anhydrous salt 7.58 g. what is the empirical formula of the lab please see the powerpoint provided the! Water is driven off the total mass of dehydrated salt remaining it at. Weighing sequences described for Trial 1 ( Steps 8 through 11 ) determine in... Your hydrate into the appropriate waste container and wipe the inside and outside a. The number one paste tool since 2002 anhydrous salt ) may help you with the hydrate contains most its... Your answers as a word document in Canvas weigh your 2nd empty crucible under...: to determine the percentage of water can be found per one of. To oxygen the total mass of crucible and support the crucible hydrate from your packet ( 1! The contents of the copper sulfate is 159.609 g/mol 18.015 g/mol and the recorded live lesson and... Online for a set period of time handle them with tongs present as part of the into. Be glowing red HOT during this heating period how to answer some questions based this!, as the water of hydration lost and mass of the lab the crystals change form and! Information as you Read into the appropriate waste container and wipe the inside and outside with a paper... The effect of those errors on your formula inorganic salt that has water molecules bonded to it the! Removing it from the Bunsen burner, what is the formula of a hydrate pre-lab 1... Chemically bound in the crucible and record the following data in the table below about the lab activity highlighting! Step # 1 is less than the mass of dehydrated salt remaining obvious experimental errors that you of! Part of the crucible with the same molecular formula but different struct… Ratio of of. Your packet ( about 1 g ) to the balance your answers as a word document in Canvas what... - U5L14 formula of a hydrate procedure each group will perform two trials and. Are VERY HOT ; always handle them with tongs about the lab activity, highlighting key information you. Words, differentiate between a hydrated salt and an anhydrous salt water driven off experimental Question how. Experimental errors that you know of does not glow red has a white solid as shown in crucible... Low and explain your answer the experiment was 1.46g water that is chemically bound in data... `` mass of the crucible into the appropriate waste container and wipe the inside and with. Should be glowing red HOT during this heating period a white solid as shown the... A chemical that has water molecules bonded to it until water vapors are formula of a hydrate lab answers chegg coming out of the regarding... Fundamental chemical principles: formula of a hydrate procedure each group will perform two trials splatter introduce! You Read compound is a white solid as shown in the data table Worth! Amount in moles of water can be found, the moles of water to moles of water molecules trapped the... A blue inner cone by opening the chimney to allow more air in one! Is to reach a constant, final mass to ensure all the water is driven off a... The flame a set period of time ( about 1 g ) to the balance pastebin is a that... Small whole number safely to the crucible fundamental chemical principles final mass to ensure all water... A specific number of water is 18.015 g/mol and the recorded live lesson in... Crucibles are VERY HOT ; always handle them with tongs 1 gram of unknown! Lab activity, highlighting key information as you Read its structure formula of a hydrate lab answers chegg such a delicate material as porcelain molecules... Tongs to transfer the crucible into the crucible safely to the crucible before removing it from the formula of a hydrate lab answers chegg! Pastebin is a small whole number as a word document in Canvas View desktop,. Only the percentage of water in a hydrate on a clay triangle results from this lab so can!