Can we use NaCla and NaOH in place of `Na_(4)Cl` and `NH_(4)OH` in the group III cation precipitation.

Explanation

To determine whether we can use NaCl and NaOH in place of NH4Cl and NH4OH in the group III cation precipitation, we need to analyze the roles of these compounds in the precipitation process.

### Step-by-Step Solution:

1. **Understanding the Role of NH4Cl**:
- NH4Cl (Ammonium Chloride) is used in the precipitation of group III cations because it provides NH4+ ions, which suppress the dissociation of hydroxide ions (OH-) due to the common ion effect. This leads to a decrease in the concentration of hydroxide ions in the solution.

**Hint**: Remember that NH4Cl contributes NH4+ ions, which help control the concentration of hydroxide ions.
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