For an endothermic reaction A rightarrow B to | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) For a reaction to be spontaneous,the Gibbs free energy change $\Delta G$ must be negative,i.e.,$\Delta G < 0$.The relationship between Gibbs free

Vedclass · Accepted Answer

$\Delta S > 0$

Vedclass · Answer

(C) For a reaction to be spontaneous,the Gibbs free energy change $\Delta G$ must be negative,i.e.,$\Delta G The relationship between Gibbs free energy,enthalpy,and entropy is given by $\Delta G = \Delta H - T\Delta S$.For an endothermic reaction,the enthalpy change $\Delta H > 0$.For $\Delta G$ to be negative $(\Delta G  \frac{\Delta H}{T}$.Since $\Delta H > 0$ and $T > 0$,it follows that $\Delta S$ must be positive,i.e.,$\Delta S > 0$.

For an endothermic reaction $A \rightarrow B$ to occur spontaneously at a constant temperature $T$,the entropy change $\Delta S$ must be:

Similar Questions

For a reversible adiabatic expansion of an ideal gas,which of the following is equal to zero?

Calculate the entropy change for melting $1 \ g$ of ice at $0^{\circ} C$ in $J \ g^{-1} K^{-1}$,if the heat of fusion of ice at $0^{\circ} C$ is $80 \ J \ g^{-1}$.

The total entropy change for a system and its surroundings increases,if the process is

When the same quantity of heat is absorbed by a system at two different temperatures $T_{1}$ and $T_{2}$,such that $T_{1} > T_{2}$,the changes in entropy are $\Delta S_{1}$ and $\Delta S_{2}$ respectively. Then:

The entropy change in the isothermal reversible expansion of $2$ moles of an ideal gas from $10 \ L$ to $100 \ L$ at $300 \ K$ is: (in $JK^{-1}$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module