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For the reaction, X(2)O(4)(l)to2XO(2)(g)...

For the reaction, `X_(2)O_(4)(l)to2XO_(2)(g),DeltaU=2.1` kcal, `DeltaS=20cal*K^(-1)` at 300K, hence, `DeltaG` is -

A

2.7 kcal

B

`-2.7ckcal`

C

9.3 kcal

D

`-9.3` kcal

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH=DeltaU+DeltanRT`
For the given reaction, `Deltan=2`.
`Delta H=2.1+2xx1.987xx10^(-3)xx300=3.2922` and `DeltaG=DeltaH-TDeltaS=3.2922-300xx20xx10^(-3)=-2.7kcal`.
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