Chemical Thermodynamics Chapter 4 Chemistry Class 12 Textbook Solution

1. Select the most apropriate option.

ix. For vaporization of water at 1 bar, ΔH = 40.63 kJ mol-1 and ΔS = 108.8 J K-1 mol-1. At what temperature, ΔG = 0 ?
a. 273.4 K

b. 393.4 K
c. 373.4 K

d. 293.4 K

Answer:-  273.4 K

Explanation:-

Temperature at which the reaction reaches equilibrium (\(\Delta G = 0\)) is,

\(T = \frac{\Delta H}{\Delta S} = \frac{40.63 \, \text{kJ mol}^{-1}}{108.8 \times 10^{-3} \, \text{kJ K}^{-1}} = 373.4 \, \text{K}\)

Chemical Thermodynamics Chapter 4 Chemistry Class 12 Textbook Solution