Final answer:
The proper units for the rate constant, k, for each reaction order are 1 / M ∙ s for zero order, 1 / s for first order, M / s for second order, and M² / s for third order.
Step-by-step explanation:
The units for the rate constant, k, will vary depending on the overall order of the reaction. Here are the proper units for each reaction order:
- Zero order: 1 / M ∙ s
- First order: 1 / s
- Second order: M / s
- Third order: M² / s
The unit of the rate constant for a zero order reaction is typically 1 / M ∙ s. For a first order reaction, the rate constant has units of 1 / s. A second order reaction has a rate constant with units of M / s, and a third order reaction has a rate constant with units of M² / s.