Transition and InnerTransition Elements - Result Question 167
####67. Complete and balance the following reactions
(i) $\left[MnO _4\right]^{2-}+H^{+} \longrightarrow \ldots . .+\left[MnO _4\right\rceil+H _2 O$
(ii) $SO _2($ aq $)+Cr _2 O _7^{2-}+2 H^{+} \longrightarrow \ldots+\ldots+$
$(1994,2 M)$
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Solution:
- (i) $3 MnO _4^{2-}+4 H^{+} \longrightarrow MnO _2+2 MnO _4^{-}+2 H _2 O$
(ii) $3 SO _2($ aq $)+Cr _2 O _7^{2-}+2 H^{+} \longrightarrow 3 SO _4^{2-}+2 Cr^{3+}+H _2 O$
