Transition and InnerTransition Elements - Result Question 70
####70. Complete and balance the following reactions.
(i) $Mn^{2+}+PbO _2 \longrightarrow MnO _4^{-}+H _2 O$
(ii) $Ag^{+}+AsH _3 \longrightarrow H _3 AsO _3+H^{+}$
$(1987,2 M$
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Solution:
- (i) $2 Mn^{2+}+5 PbO _2+4 H^{+} \longrightarrow 2 MnO _4^{-}+2 H _2 O+5 Pb^{2+}$
(ii) $6 Ag^{+}+AsH _3+3 H _2 O \longrightarrow 6 Ag+H _3 AsO _3+6 H^{+}$
