In hypothetical reaction, `A_(2)+B_(2)rarr2AB`, follows the follows the mechnism as given below :
`{:(A_(2)hArrA+A,("fast reaction")),(A+B_(2)rarrAB+B,("slow reaction")),(A+BrarrAB,("fast reaction")):}`
Give the rate law and order of reaction

Explanation

To determine the rate law and order of the reaction given the mechanism, we can follow these steps:

### Step 1: Identify the Slow Step
The rate of a reaction is determined by its slowest step. In this case, the slow step is:
\[ A + B_2 \rightarrow AB + B \]

### Step 2: Write the Rate Expression for the Slow Step
For the slow step, the rate can be expressed as:
...