A-LevelChemistryChemical energeticsMay/June 2023Paper 3 Q211 Marks
Many salts contain water of crystallisation which can be removed by heating to form the anhydrous salt. You will determine the enthalpy change of dehydration for hydrated magnesium sulfate. MgSO4•7H2O(s) → MgSO4(s) + H2O(l) You will determine this enthalpy change by measuring the changes in temperature when samples of hydrated magnesium sulfate and anhydrous magnesium sulfate are dissolved separately in excess water. FA 3 is hydrated magnesium sulfate, MgSO4•7H2O. FA 4 is anhydrous magnesium sulfate, MgSO4·
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