Chapter 16.4, Problem 35SSC

Interpretation Introduction

Interpretation:

The use of instantaneous rate of a reaction to determine the rate law of the reaction needs to be explained.

Concept introduction:

Chemical kinetic is the branch of chemistry that deals with kinetic or rate of a chemical reaction. The rate of reaction can be defined as the change in the concentration of reactant and product with time. The rate of reaction mainly depends on the activation energy.

Answer to Problem 35SSC

The comparison of instantaneous rate with the given initial concentration of each reactant will give the order of that reactant which can use to determine the rate law as in rate law the concentration terms of reactants are raised with the order of them.

Explanation of Solution

Given information:

The instantaneous rate of a reaction can be used to determine the rate law of the reaction.

The instantaneous rate of reaction represents the change in concentration of reactant at an instant time. It can be written as:

$\text{instantaneous}\text{rate = }\frac{\text{Δ[x]}}{\text{Δt}}$

Thus the instantaneous rate is the rate at some instant in time which can be determined by calculating the negative of the slope of the curve of concentration of a reactant with time at time.

The comparison of instantaneous rate with the given initial concentration of each reactant will give the order of that reactant which can use to determine the rate law as in rate law the concentration terms of reactants are raised with the order of them.

Conclusion

The comparison of instantaneous rate with the given initial concentration of each reactant will give the order of that reactant which can use to determine the rate law as in rate law the concentration terms of reactants are raised with the order of them.