Reaction Rate Curves, Activation Energy Jamb Chemistry Past Questions

Question 1

CH_4(g) + CI_2(g) \(\to\) CH₂CI_(s) + HCI_g

The major factor that influences the rate of the reaction above is

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

Question 2

3H\(_{2(g)}\)+ N\(_{2(g)}\)⇔ 2NH\(_{3(g)}\) ; H= -ve

In the reaction above, lowering of temperature will

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• A. have no effect on the equilibrium position
• B. increase the rate of both the forward and reverse reactions equally
• C. favour the forward reaction
• D. favour the reverse reaction

Question 3

Which of the following statements about catalyst is false?

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• A. biological catalysts are called enzymes
• B. catalyst do not appear in the balanced equation
• C. catalyst reduce the activation energy for a reaction
• D. catalysts do not alter the mechanism of the reaction and never appear in the rate low