NEET · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
For a given reaction, \(\Delta H = 35.5\ kJ\ mol^{-1}\) and \(\Delta S = 83.6\ J\ K^{-1} \ mol^{-1}.\) The reaction is spontaneous at (Assume that \(\Delta H\) and \(\Delta S\) do not vary with temperature.)
- A \(T > 425\ K\)
- B all temperatures
- C \(T > 298 \ K\)
- D \(T < 425\ K\)
Answer & Solution
Correct Answer
(A) \(T > 425\ K\)
Step-by-step Solution
Detailed explanation
\(\Delta \mathrm{G}=\Delta \mathrm{H}-\mathrm{T} \Delta \mathrm{S}\) for equilibrium \(\Delta \mathrm{G}=0,\Delta \mathrm{H}=\mathrm{T} \Delta \mathrm{S}\)
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