The molar heats of fusion and vapourisation of benzene are 10.9 and 31.0 {\kJ} {\mol}^{-1} respectively. The changes in entropy for the solid \rightarrow liquid and liquid \rightarrow vapour transitions for benzene are {\x} and {\y}, {\JK}^{-1} {\mol}^{-1}, respectively. The value of ( {\y}- {\x}) (. in {\JK}^{-1} {\mol}^{-1}) is (At 1 {\atm}, benzene melts at 5.5^{\circ} {\C} and boils at 80^{\circ} {\C} ) [AP EAPCET 20 May 2024 Shift 2]

Thermodynamics

Section: Chemistry

Question : 28 of 34

Marks: +1, -0

The molar heats of fusion and vapourisation of benzene are 10.9 and 31.0‌kJ‌mol−1 respectively.
The changes in entropy for the solid ⟶ liquid and liquid ⟶ vapour transitions for benzene are x and y,JK−1mol−1, respectively. The value of (y−x)(. in JK−1mol−1) is (At 1‌atm, benzene melts at 5.5∘C and boils at 80∘C )

[AP EAPCET 20 May 2024 Shift 2]

‌87.8
‌48.7
‌39.1
‌28.7

Validate

Go to Question:

Prev Question

Next Question