EXPERIMENT # 11 1 FORMULA OF A HYDRATE REPORT FORM Part 1: Determining the Water of Hydration Data & Observation: (

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EXPERIMENT # 111FORMULA OF A HYDRATEREPORT FORMPart 1: Determining the Water of HydrationData & Observation:(All data should be recorded with the proper units and number ofsignificant digits)Mass of empty crucible & cover: __________________Mass of crucible, cover & sample: __________________Mass of crucible, cover & sample __________________(after 1st heating)Mass of crucible, cover & sample __________________(after 2nd heating)Calculations:(For each step show calculations with proper number of significantfigures)Mass of hydrated crystals (sample): __________________(Show work here)Mass of anhydrous crystals: __________________(Show work here)Percent of water in sample: __________________(Show work here)Identity of unknown sample: __________________(Briefly but clearly explain the rationale and justification foryour identification)
Chemistry 65EXPERIMENT # 112Part 2: Hygroscopic and Efflorescent Samples:Briefly describe the changes you observe for each sample aftersitting in air for1 hour:calcium chloride:_________________________________________________________zinc sulfateheptahydrate:___________________________________________________iron (III)chloride:_________________________________________________________Based on your observations above, determine which samples arehygroscopic and whichare efflorescent.Hygroscopic samples:_________________________________Efflorescent samples:_________________________________Part 3: Determining HydratesIdentify each substance listed below as hydrate or not, anddescribe observations that ledyou to this determination:Compound Hydrate(Y/N) ObservationsCuSO4NaClCaCO3MgSO4
Chemistry 65EXPERIMENT # 113Questions:1. Describe the criteria and method used to identify your unknownin this experiment.2. A sample of sodium sulfate hydrate weighing 63.50 g is placed ina crucible and heated till aconstant mass of 45.99 g is obtained. Based on this information,determine the formula ofthe hydrate.3. A hydrate is determined to be 45.43% water and 54.57% CoCl2.Find the chemical formulaand name for this hydrate.
Chemistry 65EXPERIMENT # 1144. Two students in class are given different masses of 2 unknownsand asked to identify them.Student 1 claims that the unknowns are different solely based onthe fact that the mass ofwater lost for each are different. Student 2 disagrees. Whichstudent is correct? Givesupporting explanations for your choice.