Q)
(chatquestion)...mole
Comprehension for Q. Nos. 7 to &
At 300 K, vapour pressure of pure benzene and
toluene are 100 mm and 30 mm of Hg respectively. Also
benzene and toluene forms an ideal binary solution. A
solution of benzene and toluene is prepared by mixing
3.0 moles of toluene in 2.0 moles of benzene at 300 K.
Answer the following questions :
7. If vapours which is in equilibrium with the solution is
condensed, mole fraction of benzene in the first drop
pure
of liquid formed will be
20
(b)
29
18
(d)
29
9.
(a)
11
(c)
29
8. If the given solution is distilled by lowering the external
pressure at constant 300 K, what will be the m
fraction of benzene in the last drop of ligui
condensed?
(a)
6.
(b)
(c)
3
(d)
O |5116
1 Answer
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