Choose the true (T) and false (F) statements concerning with the hydrolysis of ${\mathrm{PCl}}_5 ?$

(a) Produce ${\mathrm{H}}_3{\mathrm{PO}}_4$    (b) Produce ${\mathrm{POCl}}_3$    (c) Produce Tribasic acid     (d) 4 water molecules are utilized for complete hydrolysis

Hydrolysis of PCl₅ forms H₃PO₄ and HCl. Balanced chemical reaction of hydrolysis of PCl₅ is written below which shows that four molecules of water are consumed in the reaction.

${\mathrm{PCl}}_5 + 4{\mathrm{H}}_2\mathrm{O} \to {\mathrm{H}}_3{\mathrm{PO}}_4 + 5\mathrm{HCl}$

Structure of H₃PO₄ is shown below which shows that it has three ionizable hydrogen ions (hydrogen atoms attach to the oxygen atoms). Therefore, H₃PO₄ is a tribasic acid.