Gibbs Free Energy
Gibbs Free Energy: Overview
This topic covers concepts, such as, Gibbs Free Energy and Spontaneity, Gibbs Free Energy, Condition for Endothermic Non-spontaneous Process & Graph of Gibb's Function Vs Extent of Reaction etc.
Important Questions on Gibbs Free Energy
The correct relationship between free energy and equilibrium constant K of a reaction is:

Consider the following reaction occurring in automobile
the sign of would be:

Match list-I (Equations) with List-II (Type of processes) and select the correct option.
List I | List II | ||
Equations | Type of processes | ||
(1) | Kp > Q | (i) | Non spontaneous |
(2) | (ii) | Equilibrium | |
(3) | Kp = Q | (iii) | Spontaneous and endothermic |
(4) | (iv) | Spontaneous |

A chemical reaction will be spontaneous if it is accompanied by a decrease of

Identify the correct statement for change of Gibb’s energy for a system at constant temperature and pressure:

The enthalpy and entropy change for the reaction
are respectively. The temperature at which the reaction will be in equilibrium is

Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction?

Standard enthalpy and standard entropy changes for the oxidation of ammonia at are respectively. The standard Gibbs energy change for the same reaction at is:

The entropy change in the fusion of one mole of a solid melting at (Latent heat of fusion, ) is:

What is the significance of point of minima in the plot between Gibbs energy and extent of the reaction?

What is the slope of the graph of Gibbs energy plotted against the extent of reaction?

What is an endergonic reaction and plot it in a graph between Gibbs free energy and extent of reaction?

What is an exergonic reaction and plot it in a graph between Gibbs free energy and extent of reaction?

A plot of Gibbs energy of a reaction mixture against the extent of the reaction is :

What is the value of at high temperature for exothermic non-spontaneous process?

Which of the following condition is favourable for exothermic non-spontaneous process?

For an exothermic non-spontaneous process :

What is the effect of temperature on exothermic non-spontaneous reaction?

What is the condition for non-spontaneous exothermic reaction?

The maximum work (in ) that can be derived from complete combustion of mole of at and is [Standard enthalpy of combustion of ; standard molar entropies at ]
