When phosphorus pentachloride () undergoes complete hydrolysis in the presence of excess hot water, — p Block Elements Chemistry Question
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?
Answer: 3
💡 Solution & Explanation
Complete hydrolysis of $PCl_5$ yields orthophosphoric acid ($H_3PO_4$) and $HCl$. $H_3PO_4$ contains three ionizable $P-OH$ groups, making it a tribasic acid with a basicity of 3.
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