Interpretation:
To explain the change in the reaction rate of
Concept introduction:
Consider the general reaction
Rate law of the reaction is as follows:
Here,
Answer to Problem 63A
If the concentration of reactant A is halved and all other circumstances remain constant in the reaction
Explanation of Solution
The reaction is as follows:
Rate law of the reaction is as follows:
Rate law experimentally determined by using initial rates method. The reaction is second order in reactant A. Therefore, rate is
Construct a table. In trial 2 concentration of reactant A is halved.
Trial | Initial rate
|
||
1 | |||
2 | ? |
Since, order is 2 regarding reactant A, the rate is affected by the square of the concentration of the reactant A. If the concentration of reactant A is halved compared to the first trial, the new rate will be square root of the rate in trial 1. If the rate in trial 1 is r, then it will be
Rates of the reaction increased with increase in the reactant concentration.
Chapter 16 Solutions
Chemistry: Matter and Change
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