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Cyclohexane and ethanol at a particular temperature have vapour presure of 280 mm and 168 mm respectively. If these two solutions having mole fraction value of cyclohexane equal to 0.32 are mixed and the mixture has a total vapour pressure of 376 mm, will the mixture be an ideal solution ? |
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Answer» SOLUTION :Mole fraction of cyclohexane `=0.32` `:.` mole fraction of ethanol `=1-0.32=0.68` Thus, ,br> `p=280xx0.32+168xx0.68`…………(Eqn.3) `=203.84mm` For the solution to be an ideal ONE, the VAPOUR pressure should be `203.84` but as the given value of vapour pressure is `376mm`, the solution is not ideal |
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