`PCl_(3) + H_(2) O to A + B ` . What are A and B

Options

A. `H_(3) PO_(2) + HCl`
B. `H_(3) PO_(4) + HCl`
C. `H_(3) PO_(3) + HCl`
D. `HPO_3 + HClO_(3)`

Answer

To determine the products A and B from the reaction of PCl₃ (Phosphorus trichloride) with H₂O (water), we can follow these steps:

### Step 1: Write the reactants
The reactants in the reaction are:
- PCl₃ (Phosphorus trichloride)
- H₂O (Water)

### Step 2: Identify the reaction
When phosphorus trichloride reacts with water, it undergoes hydrolysis. The general reaction can be represented as:
\[ \text{PCl}_3 + \text{H}_2\text{O} \rightarrow \text{Products} \]

### Step 3: Write the balanced chemical equation
The hydrolysis of PCl₃ can be written as:
\[ \text{PCl}_3 + 3\text{H}_2\text{O} \rightarrow \text{H}_3\text{PO}_3 + 3\text{HCl} \]

### Step 4: Identify the products
From the balanced equation, we can see that:
- A = H₃PO₃ (Phosphorous acid)
- B = HCl (Hydrochloric acid)

### Conclusion
Thus, the products of the reaction are:
- A = H₃PO₃ (Phosphorous acid)
- B = HCl (Hydrochloric acid)

### Final Answer
A = H₃PO₃ and B = HCl

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