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Q.

Diethyl ether has a normal boiling point of ${35.0}^{\circ} C$ and has an entropy of vaporization of $84.4 J / mol K$ What is its enthalpy of vaporization?

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a

$2.41 J / mol$

b

$0.274 J / mol$

c

$3.65 J / mol$

d

$26.0 kJ / mol$

answer is D.

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Detailed Solution

Change in enthlpy is calcualted below,

$Δ H = \frac{308 \times 84.4}{1000} = 26 kJ / mol$

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