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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

Even if ∆G is negative, the reaction may not occur. Explain the interplay between the thermodynamics and the kinetics of a reaction. High temperatures are favorable to a reaction kinetically but may be unfavorable to a reaction thermodynamically. Explain.

Interpretation Introduction

Interpretation: The interplay between thermodynamics and the kinetics of a reaction and the reason for high temperatures being unfavorable to a reaction thermodynamically are to be explained.

Concept introduction:

Thermodynamics is associated with heat, temperature and its relation with energy and work. It helps us to predict whether a process will take place or not. But it gives no information about the time required for the process. The terms associated with thermodynamics are system, surrounding, entropy, spontaneity and many more.

Explanation

Explanation

Thermodynamics tells that weather the reaction is spontaneous or not based upon the properties of reactants and products but the rate of the reaction depends upon the pathway from reactants to products.

The negative sign in the free energy indicates that the reaction is spontaneous in given direction but it can not be determined how fast the reaction will take place.

If the speed of the reaction is not considerable, it means that reaction is not kinetically favorable. In such cases, high temperatures can be used to make the reaction favorable by increasing the energy of the reactants to cross the activation barrier.

A reaction is favorable if the Gibb’s free energy is less than zero...

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