Chapter 18, Problem 120A

Interpretation Introduction

Interpretation:

The effect of increase in temperature on concentration of product is to be determined.

Concept introduction:

Le- Chatelier’s principle states that whenever there is a change in temperature, pressure or concentration of a reaction, equilibrium shifts in a direction to nullify the effect.

Answer to Problem 120A

Rising of temperature will decrease the amount of product.

Explanation of Solution

In the given reaction $\Delta {\rm H}=negative$

It means heat is released in the process.

Thus, on increasing temperature, according to Le- Chatelier’s principle equilibrium will shift towards reactants

Conclusion

In nutshell, all exothermic reactions are not favored by temperature. They are favored at low temperature values.