The change to the reactants that would accomplish increase in reaction rate is increase in concentration of reactant.
Reaction rate is the speed at which a chemical reaction proceeds.
It is expressed in terms of either the concentration of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.
Here, a student wants to increase the rate of a reaction that involves gases.
The increase in reaction rate will be result of increase in concentration of reactant.
In case of gases, it can be done via:
Increasing the pressure and decreasing the volume.
Hence, the change to the reactants that would accomplish increase in reaction rate is increase in concentration of reactant. Increasing the pressure and decreasing the volume are ways to accomplish this.
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