Assertion (A): For every chemical reaction at equilibrium, standard Gibbs enegry of the reaction is zero.
Reason (R ) : At constant temperature and pressure chemical reactions are spontaneous in the direction of the decreasing Gibbs energy.

Select correct statements: S_(1) : For every chemical reaction at equilibrium , standard gibbs energy of reaction is zero S_(2) : At constant temperature and pressure , chemical reactions are spontaneous in the direction of decreasing gibbs energy. S_(3) : Spontancity is related to change in entropy if universe.

Statement -1: For every chmical reaction at equilibrium , standard Gidds energy of reaction is zero Statement-2: At constant temperature and pressure , chemical reactions are spontaneious in the direction of decreasing gibbs energy.

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). A : For every chemical reaction at equilibrium, the value of standard Gibbs free energy change is zero. R: At constant temperature and pressure for a reaction that direction is preferred for which Gibbs free energy increases.