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The Order Of Reaction

OBJECTIVES

1. Write the integrated rate laws for zero order, 1st order and 2nd order reaction

2. Define half-life.

3. Draw the respective graphs for the different order reactions.

4. Solve quantitative problems.

For Reaction,

               A To form Products

                         Rate = k [A]x

i)If x=0              Rate = k [A]0

                         Rate = k

Rate is not dependent on [A]

Thus, this reaction is zero order with respect to A

              A To form Products

                          Rate = k [A]x

ii) If x=1              Rate = k [A]1

                     

    If the [A] will double the rate of reaction.

Thus, this reaction is  first order with respect to A

              A To form Products

                          Rate = k [A]x

iii) If x=2              Rate = k [A]2

Doubling the [A],the rate increase by a factor of 4.

Thus,the reaction is second order with respect to A