Question

Activation energy of a chemical reaction can be determined
by [1998]
(a) evaluating rate constant at standard temperature
(b) evaluating velocities of reaction at two different
temperatures
(c) evaluating rate constants at two different temperatures
(d) changing concentration of reactants

Answer 1

Explanation:

(c) evaluating rate constants at two different temperatures

is the correct answer

Answer 2

Activation energy of a chemical reaction can be determined by evaluating the rate constant at two different temperature.

Option: (c)

Explanation:

• Activation energy is the amount of energy which is supplied in the form of heat and light to the reactance in a reaction so as to cross the threshold level for a chemical reaction to take place.

• The activation energy is different in different kinds of reaction. It is dependent on the rate constant of the reaction.

• As a result if we compare the rate constant at two different temperatures then the activation energy can be found out.

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