1
Question
For this reaction at 300 K A(g)+B(g)→C(g) △U=−3.0 kcal;△S=−10.0 cal/K value of △G is :
For this reaction at 300 K A(g)+B(g)→C(g) △U=−3.0 kcal;△S=−10.0 cal/K value of △G is :
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Solution
The correct option is A −600 cal
Given, A(g)+B(g)→C(g) △U=−3.0 kcal;△S=−10.0 cal/K
for above reaction Δng=−1
We know the relation△G=△H−T△S
Also, △H=△U+△ngRT
=−3000−1×2×300
( Putting R = 2 cal ) \)
△H=−3600 cal
∴△G=−3600+300×10=−600 Cal
Given, A(g)+B(g)→C(g) △U=−3.0 kcal;△S=−10.0 cal/K
for above reaction Δng=−1
We know the relation△G=△H−T△S
Also, △H=△U+△ngRT
=−3000−1×2×300
( Putting R = 2 cal ) \)
△H=−3600 cal
∴△G=−3600+300×10=−600 Cal
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