When phosphorus pentachloride () undergoes complete hydrolysis in the presence of excess hot water, what is the basicity (n-factor) of the final phosphorus-containing oxoacid formed?

Question

When phosphorus pentachloride ($PCl_5$) undergoes complete hydrolysis in the presence of excess hot water, what is the basicity (n-factor) of the final phosphorus-containing oxoacid formed?

Prashant Kotian · Accepted Answer

Correct answer: 3. Complete hydrolysis of yields orthophosphoric acid () and . contains three ionizable groups, making it a tribasic acid with a basicity of 3.

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