Which of the following options represents correct sequence of True (T) or False (F) statements :
Statement-I : No Gibbs free energy change occurs for vaporization at triple point.
Statement-II : Entropy driven processes are spontaneous at high temperature.
Statement-III: $Δ G °$ of a reaction will increase with increase in temperature if the reaction is endothermic.

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TTT

TTF

FTF

TFF

answer is B.

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Detailed Solution

ST-1 : At triple point, all three states are in equilibrium with each other, hence $Δ G_{v a p} = 0$ .
ST-2: $Δ G = Δ H - T Δ S$ as $T$ increases, $Δ G$ becomes more and more negative.
ST-3 : $Δ G ° = - R T \ln K$ For endothermic reaction as $T$ increases, $K$ increases $∴ Δ G °$ will decreases as $T$ increases.

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