Q. Hypophosphorus acid $ ({{H}_{3}}P{{O}_{2}}) $ is:
JIPMERJIPMER 1998
Solution:
Hypophosphorus acid $ ({{H}_{3}}P{{O}_{2}}) $ is a monobasic acid as it gives only one type of salt $ (Na{{H}_{2}}P{{O}_{2}}) $ . $ {{H}_{3}}P{{O}_{2}}\rightleftharpoons {{H}^{+}}+{{H}_{2}}PO_{2}^{-} $ In phosphorus oxy-acids, the H-atoms attached to O-atom, are ionisable while P?H bonded H-atoms are not ionisable and are reducing. Hypophosphorus acid contains only one ?OH group and have 2 (P?H) bonded H-atoms, as
