The vapour pressure, at a given temperature, of an ideal solution containing 0.2 mole of a non volatile solute and 0.8 mole of solvent is 60 mm of Hg. The vapour pressure of the pure solvent at the same temperature is.
150 mm of Hg
60 mm of Hg
75 mm of Hg
120 mm of Hg
Which one of the following salts will have the same value of van't Hoff factor (i) as that of K4[Fe(CN)6]?
Al2(SO4)3
NaCl
Al(NO3)3
Na2SO4
If 0.1 M solution of glucose and 0.1 M solution of urea are placed on two sides of the semipermeable membrane to equal heights, then it will be correct to say that.
there will be no net movement across the membrane
Glucose will flow towards urea solution
Urea will flow towards glucose solution
Water will flow from urea solution to glucose
Which one is a colligative property?
Boiling point
Vapour pressure
Osmotic pressure
Freezing point
According to Raoult's law, relative lowering of vapour pressure of a solution is equal to
moles of solute
moles of solvent
mole fraction of solute
mole fraction of solvent
The volume strength of 1.5 N H2O2 solution is
4.8
5.2
8.4
8.8
Blood cells retain their normal shape in solutions which are
hypotonic to blood
isotonic to blood
hypertonic to blood
equinormal to blood
Molality is the most inconvenient way of expressing concentration because it
Has no unit
Is very difficult to find out
Involves difficult calculations
Involves the measurement of weight of liquids
If a hydrated crystal has vapour pressure greater than that of water vapour in the atmosphere, the crystal is
Hygroscopic
Efflorescent
Deliquescent
Phosphorescent
The van't Hoff factor for an aqueous solution of Al2(SO4)3 is
3
5
9
4