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When solid CuSO(4) dissolves in water to...

When solid `CuSO_(4)` dissolves in water to make a 1 M solution, the temperature of the system increases When solid `NH_(4)NP_(3)` dissolves in water to make a 1M solution, the temperature of the system decreases. Which statement(s) mus be correct for these dissolving processes?
(P) `DeltaH^(@)` value for both processes have the same sign.
(Q) `DeltaG^(@)` values for both processes have the same sign.

A

P only

B

Q only

C

Both P and Q

D

Neither P nor Q

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The correct Answer is:
B
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