Identify disproportionation reactions or species

1. A.
   ${ClO}_{2}^{-},F_{2},{MnO}_{4}^{-}$and ${Cr}_{2}O_{7}^{2 -}$
2. B.
   ${Cr}_{2}O_{7}^{2 -},{MnO}_{4}^{-},{ClO}_{2}^{-}$and ${Cl}_{2}$
3. C.
   ${MnO}_{4}^{-},{ClO}_{2}^{-},{Cl}_{2}$ and ${Mn}^{3 +}$
4. D.
   ${ClO}_{4}^{-},{MnO}_{4}^{-},{ClO}_{2}^{-}$and $F_{2}$

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1. A.
   $3{MnO}_{4}^{2 -} + 4H^{+} \rightarrow 2{MnO}_{4}^{-} + {MnO}_{2} + 2H_{2}O$
2. B.
   ${MnO}_{4}^{2 -} + 4H^{+} + 4e^{-} \rightarrow {MnO}_{2} + 2H_{2}O$
3. C.
   $10I^{-} + 2{MnO}_{4}^{-} + 16H^{+} \rightarrow 2{Mn}^{2 +} + 8H_{2}O + 5I_{2}$
4. D.
   $8{MnO}_{4}^{-} + 3{\text{ }S}_{2}O_{3}^{2 -} + H_{2}O \rightarrow 8{MnO}_{2} + 6{SO}_{4}^{2 -} + 2{OH}^{-}$

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1. A.
   $2H_{2}O_{2} \rightarrow 2H_{2}O + O_{2}$
2. B.
   $2{NO}_{2} + H_{2}O \rightarrow {HNO}_{3} + {HNO}_{2}$
3. C.
   ${MnO}_{4}^{-} + 4H^{+} + 3e^{-} \rightarrow {MnO}_{2} + 2H_{2}O$
4. D.
   $3{MnO}_{4}\ ^{2 -} + 4H^{+} \rightarrow 2{MnO}_{4}^{-} + {MnO}_{2} + 2H_{2}O$

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1. A.
   (A), (B)
2. B.
   (B), (C), (D)
3. C.
   (A), (B), (C)
4. D.
   (A), (D)

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