Purchase Solution

# Using experimental results to determine the order of a chemical reaction and the rate constant from your understanding of chemical kinetics and species half life.

Not what you're looking for?

A reaction is defined by the following scheme:

X à  Y

When the concentration of X in a solution is 1.02 M, the half-life (t1/2) is 160 seconds.

When the concentration of X in solution is 2.05 M, the half-life (t1/2) is 80 seconds.

The above information applies when the reaction takes place at 25 degrees Celsius.

(a) What is the order of the reaction?
(b) Calculate the rate constant for the reaction.

##### Solution Preview

Please note that the attached file contains a complete solution to the question.

PART ONE: What is the order of the reaction?
To answer this question, we will consider the equations used to calculate half-life (t1/2) for zero order, first order, and second order reactions. In each case, [X]o=concentration of X at time zero; k = rate constant.
For a zero order reaction, t1/2 = [X]o/(2k)
For a first order reaction, t1/2 = 0.693/k
For a second order reaction, t1/2 = (k*[X]o)-1
Considering the equations shown above, it is clear that for a first order reaction, the half-life is independent of the ...

##### Match Elements with their Symbols

Elements are provided: choose the matching one- or two-letter symbol for each element.

##### General Chemistry - Classification of Matter

This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.

##### Functional groups in Organic Chemistry

You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.

##### Organic Chemistry Naming: Alkanes

This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.