(C) The spontaneity of a reaction is determined by the Gibbs free energy equation: $\Delta G = \Delta H - T\Delta S$. For a process to be spontaneous,

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

Exothermic and increasing disorder

(C) The spontaneity of a reaction is determined by the Gibbs free energy equation: $\Delta G = \Delta H - T\Delta S$. For a process to be spontaneous,$\Delta G$ must be negative. In option $(C)$,the reaction is exothermic $(\Delta H 0)$. Substituting these into the equation: $\Delta G = (-ve) - T(+ve) = -ve$. Since $\Delta G$ is always negative regardless of the temperature $T$,the reaction is certain to be spontaneous.

Class 11 Chemistry Thermodynamics Free energy and Work

Medium

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

AIPMT 2005 All AIPMT

A
Exothermic and decreasing disorder
B
Endothermic and increasing disorder
C
Exothermic and increasing disorder
D
Endothermic and decreasing disorder

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

Thermodynamics

Subtopic

Free energy and Work

Previous Year

AIPMT 2005 Paper All AIPMT years →

Calculate the work done in the following reaction at $27^{\circ} C$.
$4 SO_{2(g)} + 2 O_{2(g)} \rightarrow 4 SO_{3(g)}$
$(R = 8.314 \ J \ K^{-1} \ mol^{-1})$ (in $J$)

MediumMHT CET 2025

View Solution

Calculate $\Delta H^{\circ}$ for a reaction at $298 \ K$ if $\Delta S^{\circ} = 120 \ J \ K^{-1}$ and $\Delta G^{\circ} = 28000 \ J$. (in $kJ$)

MediumMHT CET 2025

View Solution

Which of the following is not correct?

DifficultJEE MAIN 2024

View Solution

For reaction $Ag_2O_{(s)} \to 2Ag_{(s)} + 1/2 O_{2(g)}$,the value of $\Delta H = 30.56 \ kJ \ mol^{-1}$ and $\Delta S = 0.066 \ kJ \ K^{-1} \ mol^{-1}$. Temperature at which free energy change for reaction will be zero,is ............. $K$.

Medium

View Solution

$2 \, mol$ of zinc is dissolved in $HCl$ at $25 \, ^oC$. What is the work done in an open vessel?

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

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

Similar Questions

Calculate the work done in the following reaction at $27^{\circ} C$.$4 SO_{2(g)} + 2 O_{2(g)} \rightarrow 4 SO_{3(g)}$$(R = 8.314 \ J \ K^{-1} \ mol^{-1})$ (in $J$)

Calculate $\Delta H^{\circ}$ for a reaction at $298 \ K$ if $\Delta S^{\circ} = 120 \ J \ K^{-1}$ and $\Delta G^{\circ} = 28000 \ J$. (in $kJ$)

Which of the following is not correct?

For reaction $Ag_2O_{(s)} \to 2Ag_{(s)} + 1/2 O_{2(g)}$,the value of $\Delta H = 30.56 \ kJ \ mol^{-1}$ and $\Delta S = 0.066 \ kJ \ K^{-1} \ mol^{-1}$. Temperature at which free energy change for reaction will be zero,is ............. $K$.

$2 \, mol$ of zinc is dissolved in $HCl$ at $25 \, ^oC$. What is the work done in an open vessel?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Calculate the work done in the following reaction at $27^{\circ} C$.
$4 SO_{2(g)} + 2 O_{2(g)} \rightarrow 4 SO_{3(g)}$
$(R = 8.314 \ J \ K^{-1} \ mol^{-1})$ (in $J$)