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In an experiment, 1 g of non-volatile solute was dissolved in 100 g of acetone (mol. mass = 58) at 298 K. The vapour pressure of the solution was found to be 192.5 mm Hg. The molecular weight of solute is (vapour pressure of acetone =195 mm Hg)
An aqueous solution of the glucose was prepared by dissolving 18 g of glucose 90 g of water. The relative lowering in vapour pressure is
Assertion (A) : An increase in surface area increases the rate of evaporation Reason (R) : Stronger the inter-molecular attractive forces, fast is the rate of evaporation at a given temperature
At 40°C, the vapour pressure in torr of methanol and ethanol solution is $P=119x+135$ where, x is the mol fraction of methanol. Hence
The vapour pressure of pure A is 10.0 is torr and at the same temperature when 1 g of B is dissolved in 20 g of A, its vapour pressure is reduced to 9.0 torr. If the molecular weight of A is 200 a.m.u., then the molecular weight of B is
The vapour pressure of a pure liquid A is 70 torr at 27°C. It forms an ideal solution with another liquid B. The mole fraction of B is 0.2 and total vapour pressure of the solution is 84 torr at 27°C. The vapour pressure of pure liquid B at 27°C
Based on the given diagram, which of the following statements regarding the solutions of two miscible volatile liquids are correct (1) Plots AD and BC show that Raoult’s law is obeyed for the solution in which B is a solvent and A is the solute and as well as for that in which A is solvent and B is solute.(2) Plot CD shows that Dalton’s law of partial pressures is observed by the binary solutions of components A and B. (3) EF + EG = EH; and AC and BD correspond to the vapour pressures of the pure solvents A and B respectively.Select the correct answer using the codes given below Codes Question Image
The diagram given below is a vapour pressure-composition diagram for a binary solution of A and B In the solution, A – B interactions are Question Image
The vapour pressure of water at room temperature is 23.8 mm Hg. The vapour pressure of an aqueous solutions of sucrose with mole fraction 0.1 is equal to
1 mol each of following solutes are taken in 5 mole water,(A) $NaCl$ (B) ${{K}_{2}}S{{O}_{4}}$ (C) $N{{a}_{3}}P{{O}_{4}}$ (D) GlucoseAssuming 100% ionisation of the electrolyte, relative decrease in V.P. will be in order

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