Q)
Benzene and toluene form nearly ideal solutions. At 20$^{\large\circ}$C, the vapour pressure of benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure (in torr) of benzene, at 20$^{\large\circ}$C for a solution containing 78 g of benzene and 46 g of toulene, is
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