Rates of Chemical Reaction - Jamb Chemistry Past Questions and Answers

Question 61:

• JAMB 2009

A catalyst increase the rate of a chemical reaction by providing a path that

A. Raise the activiation energy
B. Increase the temperature
C. Lowers the activation energy
D. Increase the concentration

Question 62:

• JAMB 2010

The volume of a given gas is V cm³P mm Hg. what is the new volume of the gas if the pressure is reduced to half at constant temperature

A. 4 V cm³
B. 2 V cm³
C. V/2 cm³
D. V cm³

Question 63:

• JAMB 2010

The graph above demonstrate the effect of

A. Surface area on the rate of reaction
B. Catalyst on the rate of reaction
C. Pressure on the rate reaction
D. Concentration on the rate of reaction

Question 64:

• JAMB 2011

N₂O_4(g) ↔ 2NO_2(g) ΔH = +ve
In the reaction above, an increase in temperature will

A. Increase the value of the equilibrium constant
B. Decreases the value of the equilibrium constant
C. Increase in the reactant production
D. Shift the equilibrium to the left

Question 65:

• JAMB 2011

CH_4(g) + Cl_2(g) → CH₃ Cl_(s) + HCl_(g)
The major factor that influence the rate of the reaction above is

A. Catalyst
B. Temperature
C. Concentration
D. Light