The sign of Δ S rxn of reaction of dissociation of O 2 molecule and condition under that this reaction will be spontaneous has to be determined. Concept Introduction: The formula that determines spontaneity of the reaction is as follows: Δ G = Δ H − T Δ S Here, Δ G is change in the Gibbs free energy. Δ H is change in the enthalpy. Δ S is change in entropy. The table that represents the three state functions is as follows: Δ H Δ S Δ G Nature of reaction − + − Spontaneous − − − Spontaneous at low temperature + + − Spontaneous at high temperature + − + Non-spontaneous

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Chapter EN, Problem 29PQ

Interpretation Introduction

Interpretation:

The sign of ΔSrxn of reaction of dissociation of O2 molecule and condition under that this reaction will be spontaneous has to be determined.

Concept Introduction:

The formula that determines spontaneity of the reaction is as follows:

ΔG=ΔH−TΔS

Here,

ΔG is change in the Gibbs free energy.

ΔH is change in the enthalpy.

ΔS is change in entropy.

The table that represents the three state functions is as follows:

ΔHΔSΔGNature of reaction−+−Spontaneous−−−Spontaneous at low temperature++−Spontaneous at high temperature+−+Non-spontaneous

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