Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Equilibrium

Short Answer Type

41.

straight N subscript 2 left parenthesis straight g right parenthesis space plus space straight O subscript 2 left parenthesis straight g right parenthesis space space rightwards harpoon over leftwards harpoon space space space 2 NO left parenthesis straight g right parenthesis semicolon space increment straight H space equals space plus ve

What is the effect of temperature over this equilibrium?

118 Views

42.

The reaction
$straight N subscript 2 left parenthesis straight g right parenthesis space plus space 3 straight H subscript 2 left parenthesis straight g right parenthesis space space space rightwards harpoon over leftwards harpoon space space space space 2 NH subscript 3 left parenthesis straight g right parenthesis$ is at equilibrium, $NH subscript 3$ formed is absorbed in sulphuric acid, what happens to the equilibrium?

160 Views

43.

What happens when pressure is applied on ice?

114 Views

44.

Define Le-Chatelier's principle ?

191 Views

45.

In a gaseous system at equilibrium $straight a plus straight b space rightwards harpoon over leftwards harpoon space 2 straight c plus straight d comma$ 3 mole of inert gas is pumped into the vessel at constant pressure. What will be its effect on equilibrium?

111 Views

Long Answer Type

46. What is a physical equilibrium? What type of equilibria are involved in physical equilibrium?

155 Views

Short Answer Type

47.
What is the effect of pressure on the solubility of a gas in a liquid?
Or
State Henry's Law.

The effect of pressure on the solubility of a gas in the liquid was studied by Henry. This law states that the mass of a gas dissolved in a given mass of solvent at any temperature is directly proportional to the pressure of the gas above the solvent, i.e.

where K is constant of proportionality and called Henry's constant.
As the pressure of the system (liquid and gas above the liquid surface in the container) increases, the gas above the liquid surface undergoes a contraction in volume. In other words, the volume of the gas per unit area will decrease. As a result, the gas molecules have a greater tendency to get condensed and get absorbed by the liquid. Hence solubility of gas increases with the increase of pressure.

152 Views

48. Explain why the gas fizzes out (bubbles out) when a soda water bottle is opened?

466 Views

49.

A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased.
(i) What is the initial effect of the change on vapour pressure?

(ii) How do rates of evaporation and condensation change initially?

(iii) What happens when equilibrium is restored finally and what will be the final vapour pressure?

310 Views