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Standard XII

Chemistry

Characteristics of Chemical Equilibrium

Assertion :At...

Question

Assertion :At equilibrium $Δ G = 0$ Reason: The Gibbs free energy of reactants and products decreases and become equal at equilibrium.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
At equilibrium $Δ G = 0$
The Gibbs free energy of reactants and products decreases and become equal at equilibrium.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Note ;
$Δ G = Δ G^{o} + R T {log}_{e} K_{c}$
Substitute $Δ G = 0$ for equilibrium conditions
$0 = Δ G^{o} + R T {log}_{e} K_{c}$
$Δ G^{o} = - R T {log}_{e} K_{c}$

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Assertion :At equilibrium ΔG=0 Reason: The Gibbs free energy of reactants and products decreases and become equal at equilibrium.

Assertion :At equilibrium $Δ G = 0$ Reason: The Gibbs free energy of reactants and products decreases and become equal at equilibrium.