The rate law for the reaction is given by rate = k[RCl]. The rate for ...
Explanation:
The rate law for a chemical reaction describes how the rate of the reaction depends on the concentrations of the reactants. In this case, the rate law for the reaction is given by rate = k[RCl], where [RCl] represents the concentration of the reactant RCl and k is the rate constant.
Let's analyze the given options:
a) Doubling the concentration of NaOH:
This option does not directly affect the concentration of the reactant RCl. Since the rate law only includes the concentration of RCl, doubling the concentration of NaOH will not have any direct effect on the rate of the reaction.
b) Halving the concentration of NaOH:
Similar to option a, halving the concentration of NaOH will not directly affect the concentration of RCl. Therefore, this option will also not have any direct effect on the rate of the reaction.
c) Change in temperature:
The rate law does not include temperature as a variable. Therefore, changing the temperature will not directly affect the rate of the reaction.
d) Halving the concentration of RCl:
According to the rate law, the rate of the reaction is directly proportional to the concentration of RCl. Therefore, if the concentration of RCl is halved, the rate of the reaction will also be halved. This option is the correct answer.
In summary:
- Doubling the concentration of NaOH or halving the concentration of NaOH will not directly affect the rate of the reaction.
- Changing the temperature will not directly affect the rate of the reaction.
- Halving the concentration of RCl will result in halving the rate of the reaction, as stated by the rate law.