-8203-Complete the following equations -i- nbsp-Cr2 nbsp-O7 nbsp-2OH- nbsp- nbsp-ii- MnO4- nbsp- 4H- nbsp- 3e

Dear Student, (i) This reaction is conversion of dichromate to chromate Cr2O72 (aq) #160;+ #160;2OH (aq) #160; #8594; #160; #160; #160; #1 ...

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Preparation of Benzene and Homologues

#8203;Complet...

Question

Complete the following equations :
(i) Cr₂ O₇ +2OH^-
(ii) MnO₄^- + 4H⁺ + 3e

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Solution

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C r_{2} O_{7}^{2 -} + 2 O H^{-} \to

M n O_{4}^{-} + 4 H^{+} + 3 e^{-} \to

E^{0}

M n^{3 +} / M n^{2 +}

C r^{3 +} / C r^{2 +}

M n O_{4}^{-} + 8 H^{+} + 5 e^{-} \to M n^{2 +} + 4 H_{2} O; E^{o} = X_{1} V

M n O_{2} + 4 H^{+} + 2 e^{-} \to M n^{2 +} + 2 H_{2} O; E^{o} = X_{2} V

E^{o}

M n O_{4}^{-} + 4 H^{+} + 3 e^{-} \to M n O_{2} + 2 H_{2} O

C_{2} {O_{4}}^{- 2} + M n {O_{4}}^{-} + H^{+} ⟶

{C r}_{2} {O_{7}}^{2} + {F e}^{2 +} + H^{+} ⟶

M n O_{4}^{-} (a q) + B r^{-} (a q) \to M n O_{2} (s) + B r O_{3}^{-} (a q)

Complete and balance the following reactions:

(i) ${C r_{2} O_{7}}^{2 -} + H^{+} + I^{-} \to$

(ii) ${M n O_{4}}^{-} + N O_{2} + H^{+} \to$

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