When a solute is present in trace quantities the following expression is used
Vapour pressure of benzene at 30 °C is 121.8 mm Hg. When 15 g of a non-volatile solute is dissolved in 250 g of benzene its vapour pressure decreased to 120.2 mm Hg. The molecular weight of the solute (Mo. wt. of solvent = 78)
The vapour pressure of two liquids ‘P’ and ‘Q’ are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 mole of P and 2 mole of Q would be
The vapour pressure of pure benzene at 25 °C is 640 mm Hg and that of solution of solute A is 630 mm Hg. The mo lality of solution is –
Which of the following statements, regarding the mole fraction (x) of a component in solution, is incorrect?
On adding a solute to a solvent having vapour pressure 0.80 atm, vapour pressure reduces to 0.60 atm. Mole fraction of solute is :
The mole fraction of the solute in one molal aqueous solution is:
The statement “If 0.003 moles of a gas are dissolved in 900 g of water under a pressure of 1 atmosphere, 0.006 moles will be dissolved under a pressure of 2 atmospheres”, illustrates
Formation of a solution from two components can b considered as
(i) Pure solvent → separated solvent molecules, ∆H1
(ii) Pure solute → separated solute molecules, ∆H2
(iii) Separated solvent & solute molecules → Solution,
∆H3
Solution so formed will be ideal if