QJEEM16Chf925: JEE Main 2016 Chemistry - Class 11 JEEM16Chf925 Solution: For the reaction, A(g) + B(g) C(g) + D(g), H o and S o are,…

Question

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For the reaction,
A(g) + B(g)

\to

C(g) + D(g),

\Delta

H^o and

\Delta

S^o are, respectively, − 29.8 kJ mol⁻¹ and −0.100 kJ K⁻¹ mol⁻¹ at 298 K. The equilibrium constant for the reaction at 298 K is :

Accepted Answer

We have

$\Delta$ G $^\circ$ = $\Delta$ H $^\circ$ $-$ T $\Delta$ S $^\circ$

$\Delta$ G $^\circ$ = $-$ 29.8 $-$ 298 ( $-$ 0.1) = 0

$\Delta$ G $^\circ$ = $-$ 2.302 RT log K_eq

log K_eq = 0 $\Rightarrow$ K_eq = 1

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