Solutions

Question 1

A solution which can dissolve some amount of solute at a given temperature is called

Answer 1

Unsaturated solution

Question 2

A solution which cannot dissolve any amount of solute at a given temperature is called

Answer 2

Saturated solution

Question 3

An alloy is a

Answer 3

Solid in solid type of solution

Question 4

Polar solutes dissolve in

Answer 4

Polar solvents

Question 5

Non-polar solutes dissolve in

Answer 5

Non-polar solvents

Question 6

Lattice energy is

Answer 6

Amount of energy required when one mole of ionic crystal dissociates into its ions

Question 7

Hydration energy is

Answer 7

Amount of energy released when one mole of ions undergo hydration

Question 8

Solid dissolves in water when

Answer 8

Hydration energy > Lattice energy

Question 9

Solid doesn’t dissolve in water when

Answer 9

Hydration energy < Lattice energy

Question 10

Solubility increases with increase in temperature of

Answer 10

Endothermic reactions

Question 11

Solubility decreases with increase in temperature of

Answer 11

Exothermic reactions

Question 12

Pressure doesn’t have any significant effect in solubility of

Answer 12

Liquids and solids

Question 13

Pressure have significant effect in solubility of

Answer 13

Gases

Question 14

Henry’s law is

Answer 14

Mass of gas dissolved in a given volume of a liquid at a given temperature is directly proportional to pressure of the gas

m ∝ p
m = kP
k = Henry’s constant

Question 15

Henry’s law is

Answer 15

Partial pressure of gas in vapour phase is proportional to the mole fraction of the gas in solution

P = K_h X
K_h = Henry's constant 
X = mole fraction of gas

Question 16

Vapour pressure ___________ with increase of solute particles.

Answer 16

Decreases