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Problem 6.23

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Organic Chemistry
Found in: Page 236

Short Answer

For each rate equation, what effect does the indicated concentration change have on the overall rate of the reaction?

[1]

  1. tripling the concentration of only
  2. tripling the concentration of – OH only
  3. tripling the concentration of both and – OH

[2]

  1. doubling the concentration of
  2. increasing the concentration of by a factor of 10

Answer

[1]

  1. The reaction rate increases three times the initial rate.
  2. The rate of the reaction increases by a factor of three.
  3. The reaction rate increases by a factor of nine.

[2]

  1. The rate of the reaction increases by a factor of two.
  2. The reaction rate increases by a factor of ten.
See the step by step solution

Step by Step Solution

Step-by-Step SolutionStep 1: Rate of a reaction

The rate of a reaction is directly proportional/related to the concentration of the species involved in its rate-determining step.

An increase in the concentration of these species leads to an increase in the rate of the reaction.

Step 2: Effect on the rate of a reaction in case [1]

Here, the rate of the reaction depends on the concentration of and.

a. On tripling the concentration of .

On tripling the concentration of , the rate of the reaction increases by three times the initial rate.

b. On tripling the concentration of -OH

On tripling the concentration of -OH, the rate of the reaction increases three times the initial rate.

c. On tripling the concentration of both and – OH

On tripling the concentration of both the species, the reaction rate increases by a factor of 9.

Step 3: Effect on the rate of a reaction in case [2]

a. doubling the concentration of

On doubling the concentration of ,the rate of the reaction becomes twice the initial rate

b. Increasing the concentration ofby a factor of 10

On increasing the concentration of by a factor of 10 ,the reaction rate also increases by a factor of 10.

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