Chapter 17, Problem 13STP

Interpretation Introduction

Interpretation:

The shape of the graph when equilibrium is established is to be described.

Concept introduction

Equilibrium is that stage where rate of forward and rate of reverse reaction becomes equal.

Answer to Problem 13STP

In the graph, curve A represents the reactants’ concentration-time graph and curve B and C represents the product’s concentration-time graph.

The concentration of reactants is decreasing with respect to time which is represented by curve A and on the other hand, concentration of products will increases with respect to time. At equilibrium rate of forward and reverse reaction becomes equal.

Explanation of Solution

When concentration of reactants and products becomes constant means concentration-time equilibrium occurs.

a. when temperature is changed then both the forward and reverse reactions are affected.

b. change in pressure is also affected the concentration-time reaction graph.

c. change in concentration is also affected the concentration-time graph

d. addition of catalyst would increase both the forward or reveres reaction rates.

For concentration-time graph equilibrium occurs, where concentration of reactants and products are constant. These values need not be equal to each another.

Conclusion

In the graph, curve A represents the reactants’ concentration-time graph and curve B and C represents the product’s concentration-time graph.

The concentration of reactants is decreasing with respect to time which is represented by curve A and on the other hand, concentration of products will increases with respect to time. At equilibrium rate of forward and reverse reaction becomes equal.