JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Sample Paper Topic Test - Chemical Equilibrium

For the reaction at 300 K \[A(g)V(g)+S(g)\] \[{{\Delta }_{r}}{{H}^{{}^\circ }}=-30\,kJ/mol,\,\,\,{{\Delta }_{r}}{{S}^{{}^\circ }}=-0.1kJ.\,\,{{K}^{-1}}.\,\,mo{{l}^{-1}}\] What is the value of equilibrium constant?

A) 0

B) 1

C) 10

D) +RT

Correct Answer: B

Solution :

[b] \[{{\Delta }_{r}}{{G}^{o}}={{\Delta }_{r}}{{H}^{o}}-T\cdot {{\Delta }_{r}}{{S}^{o}}\]

\[=-30+300\times 0.1=0\]

\[{{\Delta }_{r}}{{G}^{o}}=-2.303\,RT\,\,\log \,K\]

\[K=1\]