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Benzene and toluene form ideal solution over the entire range of composition. The vapour pressure of pure benzene and naphthalene at 300 K are 50.71 mm Hg and 32.06 mm Hg respectively. What will be the mole fraction of benzene in vapour phase if 80 g of benzene is mixed with 100 g of naphthalene ?

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1 Answer

0.675
Hence (B) is the correct answer.
answered Jun 17, 2014 by sreemathi.v
 
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