For a reaction `A + 2B to` products, when B is taken in excess, then the rate law expression and order is

Explanation

To solve the problem, we need to determine the rate law expression and the order of the reaction for the given reaction \( A + 2B \rightarrow \text{products} \) when reactant B is in excess.

### Step-by-Step Solution:

1. **Identify the Reaction and Conditions**:
The reaction is \( A + 2B \rightarrow \text{products} \). We are told that B is taken in excess.

2. **Understand the Concept of Excess Reactant**:
...