Jamb Chemistry 2002 Past Questions and Answers

Question 6:

• JAMB 2002

In the reaction E+F ↔ G+H, the backward reaction is favoured if the concentration of

A. F is increased
B. E is increased
C. E is reduced
D. G is reduced

Question 7:

• JAMB 2002

What amount of mercury would be liberated if the same quantity of electricity that liberates 0.65g of zinc is applied?

A. 2.01g
B. 1.00g
C. 4.02g
D. 8.04g

Question 8:

• JAMB 2002

Which of the following equations show that a reaction is in equilibrium?

A. ΔG < O
B. ΔG = ΔH – TΔS
C. ΔG > O
D. ΔG = O

Question 9:

• JAMB 2002

PCl_5(g) ↔ PCl_3(g) + Cl_2(g)
In the reaction above, a decrease in pressure will

A. Decelerate the reaction
B. Increase the yield of PCl₃
C. Increase the yield of PCl₅
D. Accelerate the reaction

Question 10:

• JAMB 2002

When H2S is passed into a solution of iron (III) chloride, the solution turns

A. Pale green
B. Pale red
C. Brown
D. Colourless