For a dimerization reaction, 2A(g) -> A_(2)(g) at 298 K, Delta U^(o) = –20 kJ mol^(–1), Delta S^(o) = –30 JK^(–1) mol^(–1), then the Delta G^(o) will be _____ J.

Delta G^(o) = Delta H^(o) - TDelta S^(o) = (Delta U^(o) + Delta n_(g)RT) - TDelta S^(o) = [ \ -20 + ( 1 )8.314 / 1000 x 298 \ - 298 / 1000 x ( - 30 ) ] kJ = – 13.537572 kJ = – 13537.57 Joule

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For a dimerization reaction 2Ag A2g at 298 K Delta Uo 2... | (Chemistry) | DivineJEE

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Chemistry

Exam

Chemistry

For a dimerization reaction,
2A(g)

\to

A₂(g)
at 298 K,

\Delta

U^o = –20 kJ mol^–1,

\Delta

S^o = –30 JK^–1 mol^–1,
then the

\Delta

G^o will be _____ J.

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Explanation

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

= ( $\Delta$ U^o + $\Delta$ n_gRT) - T $\Delta$ S^o

= $\left[ {\left\{ {-20 + \left( 1 \right){{8.314} \over {1000}} \times 298} \right\} - {{298} \over {1000}} \times \left( { - 30} \right)} \right]$ kJ