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TS EAMCET · Chemistry · Thermodynamics (C)

\(\Delta H\) and \(\Delta S\) for a reaction are \(+30.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\) and \(0.06 \mathrm{kJK}^{-1} \mathrm{~mol}^{-1}\) at 1 atm pressure. The temperature at which free energy change is equal to zero and nature of the reaction below this temperature are

  1. A \(500^{\circ} \mathrm{C}\) and non-spontaneous
  2. B \(227^{\circ} \mathrm{C}\) and non-spontaneous
  3. C \(400^{\circ} \mathrm{C}\) and spontaneous
  4. D \(127^{\circ} \mathrm{C}\) and spontaneous
Verified Solution

Answer & Solution

Correct Answer

(A) \(500^{\circ} \mathrm{C}\) and non-spontaneous

Step-by-step Solution

Detailed explanation

Given, \(\begin{aligned} \Delta H & =+30.0 \mathrm{~kJ} \mathrm{~mol}^{-1} \\ \Delta S & =0.06 \mathrm{~kJ} \mathrm{~K}^{-1} \mathrm{~mol}^{-1} \\ p & =1 \mathrm{~atm} \\ \Delta G & =0 \end{aligned}\) We know that,…