Chemistry 12 Chapter 4 Exemplar Solutions Chemical Kinetics Part 5

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Question 30:

Mark the incorrect statements.

(i) Catalyst provides an alternative pathway to reaction mechanism.

(ii) Catalyst raises the activation energy.

(iii) Catalyst lowers the activation energy.

(iv) Catalyst alters enthalpy change of the reaction.

Answer: (ii), (iv

Question 31:

(i)

Catalyst

Catalyst

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(ii)

Catalyst

Catalyst

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(iii)

Catalyst

Catalyst

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(iv)

Catalyst

Catalyst

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Answer: (i), (iv)

Question 32:

Which of the following graphs is correct for a first order reaction?

(i)

First order reaction

First Order Reaction

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(ii)

First order reaction

First Order Reaction

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(iii)

First order reaction

First Order Reaction

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(iv)

First order reaction

First Order Reaction

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Answer: (i), (iv)