1. Tardigrade
  2. Question
  3. Chemistry
  4. STATEMENT-1: For every chemical reaction at equilibrium, standard Gibbs energy of reaction is zero. and STATEMENT-2: At constant temperature and pressure, chemical reactions are spontaneous in the direction of decreasing Gibbs energy.

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Q. STATEMENT-1: For every chemical reaction at equilibrium, standard Gibbs energy of reaction is zero.
and
STATEMENT-2: At constant temperature and pressure, chemical reactions are spontaneous in the direction of decreasing Gibbs energy.

JEE AdvancedJEE Advanced 2008

Solution:

At equilibrium $\Delta G =0, $
$\Delta G ^{\circ}$ of a reaction may or may not be zero.
For a spontaneous process $\Delta G <0$