A substar ce A has the following variation of vapour pressure with temperature for its solid sta...
0A substar ce A has the following variation of vapour pressure with temperature for its solid state and liquid state. Identify the options which are correct:
Data : For solid \( \mathrm{A}: \log _{10} \mathrm{P}=4-\frac{2000}{\mathrm{~T}} ; \quad \) For liquid \( \mathrm{A}: \log _{10} \mathrm{P}=3.48-\frac{1500}{\mathrm{~T}} \)
\( P \)
Where \( \mathbf{P} \) is in \( \mathbf{~ m m} \) of \( \mathbf{H g} \) and \( \mathbf{T} \) in \( \mathbf{K} \).
W.
(A) Enthalpyof vapourisation and enthalpyof fusion will be temperature independent.
(B) \( \Delta \mathrm{H}_{\text {sub. }} \) will be approximately \( 9.212 \mathrm{kcal} / \mathrm{mol} \).
(C) \( \Delta \mathrm{H}_{\text {fusion }} \) will be approximately \( 2.303 \mathrm{kcal} / \mathrm{mol} \).
(D) \( \Delta \mathrm{H}_{\text {vap }} \). will be approximately \( 6.909 \mathrm{kcal} / \mathrm{mol} \).
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