The better concentration term when the amount of solute is very small is_______________
Molarity
Molality
Parts per million
Mole fraction
In cold countries, ethylene glycol is added to water in the radiators of cars during winter. This results in_______________________
Lowering the freezing point
Reducing the specific heat
Reducing the viscosity
Making water a better conductor of electricity
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 moles of p and 3 mols of Q would be.
140 torr
20 torr
68 torr
72 torr
Formation of a solution from two components can be considered as
Solution so formed will be ideal, if
ΔHsoln = ΔH1 - ΔH2 - ΔH3
ΔHsoln = ΔH3 - ΔH1 - ΔH2
ΔHsoln = ΔH1 + ΔH2 + ΔH3
ΔHsoln = ΔH1 + ΔH2 - ΔH3
A solution containing components A and B follows Raoult's law, when
A-B attraction force is greater than A - A and B- B
A - B attraction force is less than A - A and B - B
A- B attraction force remains same as A - A and B - B
Volume of solution is different from sum of volumes of solute and solvent
Blood cells retain their normal shape in solutions which are
hypotonic to blood
isotonic to blood
hypertonic to blood
equinormal to blood
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
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
NaCI
AI(NO3)3
Na2SO4
If 0.15 g of solute, dissolved in 15 g of solvent, is boiled at a temperature higher by 0.216oC, than that of the pure solvent, the molecular weight of the substance is ______________(molal elevation constant for the solvent is 2.16oC).
1.01
10
10.1
100
Which of the following colligative property can provide molar mass of proteins (or polymers or colloids) with greatest precision?
Osmotic pressure
Elevation in boiling point
Depression in freezing point
Relative lowering of vapour pressure
