Question

The rate constant (k) depends on which of the following? (There may be more than one answer.)

a. the concentration of the reactants

b. the nature of the reactants

c. the temperature

d. the order of the reaction

Explain.

Short answer

The rate constant depends on the temperature and the order of the given reaction. Hence, options (C) and (D) are correct.

Step-by-step solution

Understanding how the rate constant of reaction depends on the temperature.

The rate of constant over-reaction depends upon the temperature of the reaction.That is rate constant is constant for a particular reaction at a fixed temperature.Increasing the temperature of the reaction generally speeds up the process. That increases the rate because the rate constant increases according to our linear equation.

Understanding how great the constant of reaction depends on its order.

The rate constant of a reaction depends upon the order of the reaction. This can be understood by understanding the fact that the sum of the order exponents in the equation determines the unit of the reaction rate constant. We can also see, that for the general reaction, the reaction rate equals the rate constant times the concentration of the reactants each raised to a reaction order.