Thermodynamics and Thermochemistry 1 Question 47
50. Statement I For every chemical reaction at equilibrium, standard Gibbs energy of reaction is zero.
Statement II At constant temperature and pressure, chemical reactions are spontaneous in the direction of decreasing Gibbs energy.
$(2008,3 \mathrm{M})$
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Solution:
- Statement $I$ is false. At equilibrium
$$ \Delta G=0, G \neq 0 $$
Statement II is true, spontaneous direction of reaction is towards lower Gibbs free energy.
