Questions in solutions

SelectQuestion
The relative lowering of vapour pressure produced by dissolving $71.5\ g$ of a substance in $1000\ g$ of water is 0.00713. The molecular weight of the substance will be
Dry air was passed successively through a solution of $5\ g$ of a solute in $80\ g$ of water and then through pure water. the loss in weight of solution was $2.50\ g$ and that of pure solvent $0.04\ g$. What is the molecular weight of the solute
The vapour pressure of a solution of 5 g of a non-electrolyte in 100 g of water at a particular temperature is $2985\,N\,{{m}^{-2}}.$The vapour pressure of pure water at that temperature is $3000\,N\,{{m}^{-2}}.$ The molecular weight of the solute is
Which of the following solution in water possesses the lowest vapour pressure
The vapour pressure of benzene at a certain temperature is $640\ mm$ of $Hg$. A non-volatile and non-electrolyte solid weighing $2.175\ g$ is added to $39.08\ g$ of benzene. The vapour pressure of the solution is $600\ mm$ of $Hg$. What is the molecular weight of solid substance
The vapour pressure of a solvent decreased by $10\ mm$ of mercury, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if decrease in the vapour pressure is to be $20\ mm$ of mercury
An ideal solution was obtained by mixing methanol and ethanol. If the partial vapour pressure of methanol and ethanol are $2.619\,K{{P}_{a}}$and $4.556\,K{{P}_{a}}$respectively, the composition of vapour (in terms of mole fraction) will be
The vapour pressure lowering caused by the addition of 100 g of sucrose (molecular mass = 342) to 1000 g of water if the vapour pressure of pure water at 25°C is 23.8 mm Hg
The degree of dissociation of $Ca{{(N{{O}_{3}})}_{2}}$ in a dilute aqueous solution containing $14\ g$ of the salt per $200\ g$ of water ${{100}^{o}}C$ is 70 percent. If the vapour pressure of water at ${{100}^{o}}C\ 760\ cm$. Calculate the vapour pressure of the solution
The vapour pressure of pure benzene at a certain temperature is $200\ mm\ Hg$. At the same temperture the vapour pressure of a solution containing $2g$ of non-volatile non-electrolyte solid in $78\ g$ of benzene is $195\ mm\ Hg$. The molecular weight of solid is

View Selected Questions (0)

Back to Categories

Back to Home