Chemical equilibrium - Jamb Chemistry Past Questions and Answers

Question 31:

• JAMB 2011

The diagram above best illustrates the effect of decrease in

A. Concentration
B. Temperature
C. Surface area
D. Pressure

Question 32:

• JAMB 2013

Choose the correct option from the graph above . 3Fe_(S) + 4H₂O_(g) ⇌ Fe₃O_4(s) + 4H_2(g). The equilibrium constant, K, of the reaction above is represented as

A. A
B. B
C. C
D. D

Question 33:

• JAMB 2014

In an equilibrium reaction, which of the following conditions indicates that maximum yield of the product will be obtained?

A. Equilibrium constant is very large
B. ∆H - T∆S = O
C. ∆ H > T ∆ S
D. Equilibrium constant is less than zero

Question 34:

• JAMB 2014

Cr ₂O\(\frac{2 -}{7}\) (aq) + H ₂O(1)⇌ 2CrO \(\frac{2 -}{4}\) (aq) + 2H ⁺ (aq)
What happens to the reaction above when the hydrogen ion concentration is increased?

A. More of the products will be formed
B. The reaction will not proceed
C. The equilibrium position will shift to the right
D. The equilibrium position will shift to the left.

Question 35:

• JAMB 2017

The process that occurs when two equivalent forms of a compound are in equilibrium is

A. Isotopy
B. Resonance
C. Isomerism
D. Reforming