Chemical Thermodynamics Question 155

Question: The equilibrium concentration of the species in the reaction $ A+B\equiv C+D $ are 3, 5, 10 and 15 $ mole,{{L}^{-1}} $ respectively at $ 300,K $ the $ \Delta G $ for the reaction is [Pb. PMT 2004]

Options:

A) 13.81

B) - 1381.8

C) - 138.18

D) 1391.6

Show Answer

Answer:

Correct Answer: B

Solution:

$ \Delta G=-2.303,RT,\log ,{K}’ $ , Here $ R=2,cal,T=300K $

$ {K}’=\frac{10\times 15}{3\times 5}=10 $ ; $ \Delta G=-2.303\times 2\times 300\times {\log_{10}}10 $

$ =-2.303\times 2\times 300\times 1=-1381.8,cal $



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