When enthalpy is negative and entropy is negative:

Δ G

is negative, at high temperature

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Δ G

is negative, at lower temperature

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Δ G

is positive, at high temperature

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none of these

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Solution

The correct option is B $Δ G$ is negative, at lower temperature
When enthalpy is negative and entropy is negative, $Δ G$ is negative, at lower temperature.
$Δ G = Δ H - T Δ S = - v e - T \times - v e = - v e + + v e = - v e$ for low T
Negative free energy change corresponds to spontaneous reaction.

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Similar questions

Q. Assertion :Reduction of

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1100^{\circ} C

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Δ G^{\circ}

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Which of the following is not correct?
(a) $Δ$ G is zero for a reversible reaction.
(b) $Δ$ G is positive for a spontaneous reaction.
(c) $Δ$ G is negative for a spontaneous reaction.
(d) $Δ$ G is positive for a non-spontaneous reaction.

The equilibrium constant is

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Q. When enthalpy is positive and entropy is negative :

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When enthalpy is negative and entropy is negative:

The correct option is B ΔG is negative, at lower temperatureWhen enthalpy is negative and entropy is negative, ΔG is negative, at lower temperature.ΔG=ΔH−TΔS=−ve−T×−ve=−ve++ve=−ve for low T Negative free energy change corresponds to spontaneous reaction.