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The enthalpies of solution of anhydrous ...

The enthalpies of solution of anhydrous `CuSO_(4)` and `CuSO_(4). 5 H_(2)O` are `-15.89` and `2.80 k cal mol^(-1)` respectively. The enthalpy of hydration of `CuSO_(4)` to `CuSO_(4). 5 H_(2)O` is :

A

`-18.69 kcal`

B

13.09 kcal

C

`-13.9 kcal`

D

18.69 kcal

Text Solution

Verified by Experts

The correct Answer is:
A

`Delta H_("hydration") + Delta H_(2) = Delta H_(1)`
`Delta H_("hydration") = Delta H_(1) - Delta H_(2) = - 15.89 - 2.80`
`= - 18.69 kcal`
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