At 120oC, the vapour pressure of pure chlorobenzene (C6H5Cl) is 0.736 atm. What is the vapour pressure of a solution of 5.00 g of naphthalene (C10H8) in 50.0 g of chlorobenzene? (Assume that naphthalene is not volatile)

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0.736 atm

0.091 atm

0.677 atm

1.00 atm

answer is C.

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Detailed Solution

0.736-Ps0.736=51285128+50112.50.736-Ps0.736=0.0390.039+0.444 0.736-Ps=0.059 Ps=0.677 atm

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