Chapter 11, Problem 4CO

Interpretation Introduction

Interpretation:

Plot the graph between time and different functions of concentration to interpret rate law of reaction.

Concept Introduction:

Consider the following simple chemical reaction:

$\text{aA }\to \text{ bB}$

• For zero order reaction: The graph between [A] and time is a straight line.
• For first order reaction: The graph between ln [A] and time is a straight line.
• For second order reaction: The graph between 1/[A] and time is a straight line.

The slope of the line will give the value of rate constant ’k”.

Then the rate law can be determined as ${\text{dx/dt = k[A]}}^{\text{n}}$ where n is the order of reaction.