For a fourth-order reaction,what is the unit of $K$?

The rate of reaction is determined by the slow step of the reaction. This step is called:

For the reaction $A + B \rightarrow \text{Product}$,if the concentration of $A$ is doubled,the reaction rate doubles. When the concentration of $B$ is doubled,the reaction rate remains unchanged. What is the overall order of the reaction?

For a given reaction $t_{1/2} = \frac{1}{k \cdot a}$,the order of reaction will be:

In a one-component second-order reaction,if the concentration of the reactant is reduced to half,the rate

For $n$th order of reaction,half-life period is directly proportional to