Chemistry Chapter 8 Short Questions For Class 11

The most important Chemistry chapter 8 short questions for Class 11. The 1st-year chapter 8 of Chemistry is related to chemical equilibrium. These questions are for the Punjab Textbook Board that can be used within all of Punjab where this syllabus is taught.

Students are advised to prepare these questions in order to perform the best in the board examination.

Chemistry Chapter 8 Short Questions for Class 11

What is meant by the state of chemical equilibrium?
Define reversible reaction. Give an example.
The change of volume disturbs the equilibrium position for some of the gas phase reactions but not the equilibrium constant.
Mention the characteristics of chemical equilibrium.
Reversible reaction attains the position of equilibrium which is dynamic in nature and not static. Explain it.
Why do the rates of forward reactions slow down when a reversible reaction approaches the equilibrium stage?
Why can ice at 0°C be melted by applying pressure without supply of heat from outside?
Write two conditions of equilibrium constant.
The reversible reaction 2SO₂(g) + O₂(g) ⇌ 2SO₃(g) has come to equilibrium. Before the reaction began, the concentrations were 0.060 mol/dm³ of SO₂ and 0.050 mol/dm³ of O₂. After equilibrium is reached, the concentration of SO₃ is 0.040 mol/dm³. What is the equilibrium concentration of O₂?
Differentiate between reversible and irreversible reaction.
Define Law of Mass Action and Equilibrium Constant (Kc).
Justify that chemical equilibrium is dynamic in nature.
What is the effect of change in pressure on a system in equilibrium for gases?
What will be the effect of increase of pressure and temperature on the following reaction? N₂(g) + 3H₂(g) ⇌ 2NH₃(g), ΔH = −92.46 kJ
Briefly explain the effect of pressure on the equilibrium position for the dissociation of PCl₅.
How does a catalyst affect the equilibrium constant?
Write down the equilibrium constant expression for the reaction: PCl₅(g) ⇌ PCl₃(g) + Cl₂(g)
Write down Kc units for the reaction PCl₅(g) ⇌ PCl₃(g) + Cl₂(g).
State Le Chatelier’s Principle.
What are the optimum conditions of temperature and pressure to get maximum yield of ammonia? N₂ + 3H₂ ⇌ 2NH₃, ΔH = −92.46 kJ
Why does the equilibrium constant value have its units for some of the reversible reactions but has no units for some other reactions?