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Enthalpy of solution of anhydrous CuSO 4 and hydrated CuSO 4 .5H 2 O are -66.5 and +11.7 KJ/mol. Calculate the enthalpy of hydration of anhydrous copper sulphate to pentahydrate.

Enthalpy of solution of anhydrous CuSO4 and hydrated CuSO4.5H2O are -66.5 and +11.7 KJ/mol. Calculate the enthalpy of hydration of anhydrous copper sulphate to pentahydrate.

Grade:11

1 Answers

Govind
15 Points
4 years ago
From Hess law
"The enthalphy change is constant for 
A reaction whether the reaction is carried out in one step or in more than one step."
 
  •   ∆H=-66.5-(+11.7)=-78.2 kJ/mol

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