Question:medium
$\Delta H$ and $\Delta S$ for the reaction, $2A+B \rightarrow C$ at 298 K are $400~kJ~mol^{-1}$ and $2~kJ~K^{-1}mol^{-1}$ respectively. At or above $T(K)$, the reaction becomes spontaneous. What is $T(K)$?
$\Delta H$ and $\Delta S$ for the reaction, $2A+B \rightarrow C$ at 298 K are $400~kJ~mol^{-1}$ and $2~kJ~K^{-1}mol^{-1}$ respectively. At or above $T(K)$, the reaction becomes spontaneous. What is $T(K)$?
Show Hint
For reactions with
\[
\Delta H>0,\qquad \Delta S>0
\]
high temperature favors spontaneity.
The critical temperature is
\[
T=\frac{\Delta H}{\Delta S}
\]
Updated On: Jun 22, 2026
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The Correct Option is B
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