Q.

A sample of air is saturated with benzene (vapour pressure = 100 mm Hg at 298 K) at 298 K750 mm Hg pressure, If it is isothermally compressed to one third of its initial volume, the final pressure of the system is:

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a

2250 torr

b

 2150 torr

c

2050 torr

d

1950 tor 

answer is C.

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Detailed Solution

Pair =750100

=650

 New, Pair =650×3=1950 torr 

Total P=1950+100

P = 2050 torr 

Hence, option C is correct.

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