11 grade chemistry others
PCl₃ reacts with water to form an acid of phosphorus. What is the basicity of the resulting acid?
PCl₃ reacts with water to form an acid of phosphorus. What is the basicity of the resulting acid?
1 Answer
Askiitians Tutor Team
When PCl3 (phosphorus trichloride) reacts with water (H2O), it undergoes hydrolysis to form an acid known as phosphorous acid, H3PO3. The reaction can be represented as follows:
PCl3 + 3H2O → H3PO3 + 3HCl
In phosphorous acid (H3PO3), there are two replaceable hydrogen ions (H+), which can act as acid groups. Therefore, phosphorous acid is a dibasic acid, meaning it can donate two hydrogen ions (H+) per molecule in acid-base reactions.
So, the basicity of phosphorous acid (H3PO3) is 2.
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