At 20 ° C , the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in the vapour phase at 20 ° C above an equimolar mixture of benzene and methyl benzene is _ _ × 10 - 2

Question

At 20 &#176; C , the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in the vapour phase at 20 &#176; C above an equimolar mixture of benzene and methyl benzene is _ _ &#215; 10 - 2 . (Nearest integer)

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Correct answer: 0

P B &#8728; = 70 P T &#8728; = 20 X B = 0.5 = X T Now y B = X B P B &#8728; X B P B o + X T P T &#8728; = 70 &#215; 0.5 70 &#215; 0.5 + 20 &#215; 0.5 = 78 &#215; 10 - 2

At 20 ° C , the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in the vapour phase at 20 ° C above an equimolar mixture of benzene and methyl benzene is _ _ × 10 - 2 . (Nearest integer)

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At 20 &#176; C , the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in the vapour phase at 20 &#176; C above an equimolar mixture of benzene and methyl benzene is _ _ &#215; 10 - 2 . (Nearest integer)

Correct answer

Step-by-step solution

More from Solutions

At 20 ° C , the vapour pressure of benzene is 70 torr and that of methyl benzene is 20 torr. The mole fraction of benzene in the vapour phase at 20 ° C above an equimolar mixture of benzene and methyl benzene is _ _ × 10 - 2 . (Nearest integer)