18.2 g of urea is dissolved in 100g of water at `50^(@)C`. The lowering of vapour pressure produced is 5 mm Hg. Calculate the molecular mass of urea. The vapour pressure of water at `50^(@)C` is 92 mm Hg.

(a) 10 g of a certain non-volatile solute were dissolved in 100 g water at 20^(@) C . The vapour pressure was lowered from 17.3555 mm to 17.2350 mm , calculate m . wt. of solute. (b) The vapour pressure of pure water at 25^(@)C is 23.62 mm . What will be the vapour pressure of a solution of 1.5 g of urea in 50 g of water?

Vapour pressure in mm Hg of 0.1 mole of urea in 180 g of water at 25^(@)C is (The vapour pressure of water at 25^(@) C is 24 mm Hg)

Vapour pressure of water at 20^C is 17.5 mm of Hg and lowering of vapour pressure of a sugar soluton is 0.061 mm of Hg. Calculate relative lowering of vapour pressure?

Calculate the vapour pressure lowering caused by addition of 50g of sucrose (molecular mass = 342) to 500g of water if the vapour pressure of pure water at 25^(@)C is 23.8 mm Hg .

Calculate the vapour pressure lowering caused by addition of 50g of sucrose (molecular mass = 342) to 500g of water if the vapour pressure of pure water at 25^(@)C is 23.8 mm Hg .

Calculate the vapour pressure lowering caused by addition of 50g of sucrose (molecular mass = 342) to 500g of water if the vapour pressure of pure water at 25^(@)C is 23.8 mm Hg .