(i)
Interpretation:
Entropy of activation has to be calculated for second order gas-phase ozone decomposition which has frequency factor as
(i)

Explanation of Solution
Given information:
Entropy of activation:
In the problem statement it is said that the reaction takes place at low pressure. Hence, the reaction is assumed to be bimolecular and the rate constant is second-order.
The rate constant equation can also be given as shown below by use of Eyring equation.
Comparing the above equation with equation (1),
Therefore.
The above equation implies that,
It is known that
Substitution of the obtained values in the equation (1), entropy of activation can be calculated as shown below,
The entropy of activation is calculated as
(ii)
Interpretation:
Enthalpy of activation has to be calculated for second order gas-phase ozone decomposition which has frequency factor as
(ii)

Explanation of Solution
Given information:
Enthalpy of activation:
Enthalpy of activation can be given by the equation shown below,
Therefore, the enthalpy of activation is calculated as
(iii)
Interpretation:
Gibbs energy of activation has to be calculated for second order gas-phase ozone decomposition which has frequency factor as
(iii)

Explanation of Solution
Given information:
Enthalpy of activation (
Entropy of activation (
Gibbs energy of activation:
Gibbs energy can be calculated using the equation given below,
Substitution of the obtained values in equation (1), Gibbs energy of activation can be calculated as shown below,
Therefore, the Gibbs energy of activation is calculated as
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Chapter 18 Solutions
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