1) With excess of water both P2O5 and PCl5 give A) $H_{3}PO_{3}$ B) $H_{3}PO_{2}$ C) $H_{3}PO_{4}$ D) $H_{4}P_{2}O_{7}$ Answer: Option CExplanation:Both P2O5 and PCl5 give $H_{3}PO_{4}$ with excess of water $P_{2}O_{5}+3H_{2}O\rightarrow 2H_{3}PO_{4}$ $PCl_{5}+4H_{2}O\rightarrow H_{3}PO_{4}+5HCl$
