The vapour pressure of two liquids ‘P’ and ‘Q’ are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and 2 mole of Q would be
(a) 72 torr
(b) 140 torr
(c) 68 torr
(d) 20 torr
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Its based on Raoult law. I mentioned the answer in pic. Plz see
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do same as above question let do it
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