Complete the following reaction equation :
`C_6H_5N_2Cl+H_3PO_2+H_2Oto.....`

Explanation

To complete the reaction equation given by `C6H5N2Cl + H3PO2 + H2O`, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The first reactant is **C6H5N2Cl**, which is benzene diazonium chloride.
- The second reactant is **H3PO2**, known as hypophosphorous acid.
- The third reactant is **H2O**, which is water.
...