Give the criteria for spontaneity of a process in terms of free energy change(`DeltaG`)

a) DeltaG gives a criteria for spontaneity of reactions at a constant pressure and temperature. How is DeltaG helpful in precting the spontaneity of the reaction? b) State and explain Hess's law of constant heat summation.

What is the effect of adding catalyst on the free energy change (Delta G) of a reaction?

The spontaneity of a process is expressed in terms of a change in Gibbs energy. a) What is meant by a change in Gibbs energy of a system? b) How is it related to the enthalpy and entropy of a system? c) How is it useful in predicting the feasibility of a process?

Assertion: An electrochemical cell can be set up only if the redox reaction is spontaneous. Reason: A reaction is spontaneous if free energy change is negative.

The process requiring absorption of energy is

The spontaneity of a process is expressed in terms of a change in Gibbs energy. How is it useful in predicting the feasibility of a process?

The spontaneity of a process is expressed in terms of a change in Gibbs energy. How is it related to the enthalpy and entropy of a system?