1.

12 g of urea is dissolved in 1 litre os water and 68.4 g of sucrese in also dissolven in 1 lite of water. The lowering in the vapour pressure of first case is :

Answer»

equal to secound
greater than second
less than secound
double than second.

Solution :Both have same lowering in V.P. as they have same no. of moles.
`"UREA=((12G))/((60g MOL^(-1)))=0.2 mol`
`"Sucrose"=(68.4 G)/((342g mol^(-1)))=0.2 mol`


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