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At 298 K, the heat of solution of MgSO(4...

At 298 K, the heat of solution of `MgSO_(4) (s)` is `-91.21 kJ mol^(-1)` and that of `MgSO_(4). 7H_(2)O(s)` is 13.81 kJ `mol^(-1)`. Calclate heat of hydration of `MgSO_(4)(s)` i.e., `DeltaH` for the reaction
`MgSO_(4)(s)+7H_(2)O(l) to MgSO_(4).7H_(2)O(s)`

A

`-105.02KJmol^(-1)`

B

`105.02KJmol^(-1)`

C

`-77.40KJmol^(-1)`

D

`77.40KJmol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaH=H_(P)-H_(R),DeltaH=H_(MgSO_(4))-H_(MgSO_(4).7H_(2)O)`
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