Question

Complete and balance the following reactions.
(i) $M{n}^{2-}+Pb{O}_2\to Mn{O}_4^{-}+H_{2}O$
(ii) $A{g}^{+}+As{H}_3\to H_{3}As{O}_3+H^{+}$

Answer 1

(i) $2M{n}^{2+}+5Pb{O}_2+4H^{+}\to 2Mn{O}_4^{-}+2H_{2}O+5P{b}^{2+}$
(ii) $6A{g}^{+}+As{H}_3+3H_{2}O\to 6Ag+H_{3}As{O}_3+6H^{+}$