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[Co(H(2)O)(6)]^(2+)(aq)("pink")+4Cl^(-)(...

`[Co(H_(2)O)_(6)]^(2+)(aq)("pink")+4Cl^(-)(aq)hArr[CoCl_(4)]^(2+)(aq)("blue")+6H_(2)O(l)`
In the above reaction at equilibrium, the reaction mixture is blue in colour at room temperature. On cooling this mixture, it becomes pink in colour On the basis of this information, which one the following is true ?

A

`DeltaHgt0` for the forward reaction

B

`DeltaH=0` for the reverse reaction

C

`DeltaHlt0` for the forward reaction

D

Sign of the `DeltaH` cannot be predicted bassed on this information.

Text Solution

Verified by Experts

The correct Answer is:
A
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