
Interpretation:
The rate law for given reaction to be written and simplificationf rate law to be checked, along with the half-lifeaccording to the given conditions, is to be determined.
Concept introduction:
The study of reaction rates, rearrangement of atoms, and the effect of various variables in a
A half-life is the quantity of time it takes for half of a substance to undergo some specified process.
The half-life for the second order reaction is as follows:
The rate law for a chemical reactionis defined as an equation that relates the reaction rate with the concentrations or partial pressures of the reactants.
The rate law is given by:

Answer to Problem 84AP
Solution:
a)
b)
c)
Explanation of Solution
a) The rate law for the reaction
The rate law for a given reaction is as follows:
Here,
It suggests that two molecules of NO are colliding with a molecule of oxygen and forming nitrogen dioxide. This reaction has two or more elementary steps.
Explanation:
b) The rate law can be simplified is to be checked and if so simplified rate law to be written.
A sample of air at a certain temperature is contaminated with
In thegivenreaction, two molecules of
The rate law is given as follows:
Here,
Given information: A sample of air at a certain temperature is contaminated with
Explanation:
c) The half-lifeto be estimated if the initial concentration of NO were 10 ppm
As this reaction is a second-order reaction, the half-life time for this reaction is written as follows:
Here,
The sample is contaminated with
The expression of half-life, by substituting these values in the above equation, can be written as follows:
The initial concentration of
By dividing
Substitute the values of
Therefore, the half-life for an initial concentration of
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Chapter 21 Solutions
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