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Calculate the vapour pressure of solution having 3.42 g of cane-sugar in 180 g water at 40^(circ)C and 100^(circ)C. Given that boiling point of water is 100^(circ)C and heat of vaporisation is 10 kcal mol^(-1) in the given temperature range. Also calculate the lowering in vapour pressure of 0.2 molal cane-sugar at 40^(circ)C. |
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