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$PCl_3$ reacts with water to form
$PCl_3$ reacts with water to form
Updated On: Jun 24, 2026
- $PH_3$
- $H_3PO_3, HCl$
- $POCl_3$
- $H_3PO_4$
Show Solution
The Correct Option is B
Solution and Explanation
To determine the products formed when PCl_3 reacts with water, we need to understand the chemical reaction involved. PCl_3 (phosphorus trichloride) is a well-known reagent that reacts with water in a hydrolysis reaction. The chemical reaction can be represented as follows:
\[
PCl_3 + 3H_2O \rightarrow H_3PO_3 + 3HCl
\]
Explanation:
- Reactants: In the given reaction, the initial reactant is phosphorus trichloride (PCl_3) which reacts with water (H_2O).
- Products: Upon hydrolysis, PCl_3 gets converted into phosphorous acid (H_3PO_3) and hydrochloric acid (HCl).
- H_3PO_3 is a diprotic acid, also known as phosphonic acid.
- HCl is a strong acid which is also formed during this reaction.
By analyzing the options provided:
- PH_3: This is phosphine gas and is not formed in this reaction.
- Correct Answer: H_3PO_3, HCl: As derived from the balanced chemical equation, these are the products of the reaction.
- POCl_3: This is phosphorus oxychloride; it is not formed in this reaction.
- H_3PO_4: This is phosphoric acid and is not the product of this particular reaction.
Thus, the correct answer is that PCl_3 reacts with water to form H_3PO_3 and HCl.
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