Answer:
A. the speed at which reactants change to products over a given time
Explanation:
The rate of reaction is a measure of the speed of a chemical reaction. In chemical kinetics, the speed at which the reaction occurs is the reaction rate.
- The measurement of the reaction rate is based on the disappearance of a reactant or appearance of the product with increasing reaction time.
- Rate of reaction depends on the:
- nature of reactants.
- concentration of the reactants or pressure
- temperature
- presence of catalyst
- sunlight
