Q30 · CSIR NET Chemistry, December 2011
Paper: CSIR NET December 2011 · Subject: Physical Chemistry · Chapter: Thermodynamics · Topic: Laws State Functions · Marks: 2 · Difficulty: Medium
For the liquid $\rightleftharpoons$ vapour equilibrium of a substance $\frac{dP}{dT}$ at 1 bar and 400 K is $8 \times 10^{-3}$ bar $\mathrm{K^{-1}}$. If the molar volume in the vapour form is 200 $\mathrm{L\,mol^{-1}}$ and the molar volume in the liquid form is negligible, the molar enthalpy of vapourisation is (1.0 bar L = 100 J)
(a)640 $\mathrm{kJ\,mol^{-1}}$
(b)100 $\mathrm{kJ\,mol^{-1}}$
(c)80 $\mathrm{kJ\,mol^{-1}}$
(d)64 $\mathrm{kJ\,mol^{-1}}$
Answer
Answer (as printed): D
Explanation
No explanation was printed for this question.
Study loop for Thermodynamics