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02/10/2020 10:47 am
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12g of urea is dissolved in 1 litre of water and 68.4 g of sucrose is dissolved in 1 litre of water. The lowering of vapour pressure of first case is
(a) equal to second
(b) greater than second
(c) less than second
(d) double that of second
1 Answer
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02/10/2020 10:48 am
(a) equal to second
Explanation:
Moles of urea = 12/60 = 0.2
Moles of sucrose = 68.4/342 = 0.2
Both are non electrolyte hence lowering of V.P. will be same.