Complete the given reactions. $$\left( {\text{A}} \right)2MnO_4^ - + {H_2}O + {I^ - } \to $$ $$2\underline {\left( {\text{i}} \right)} + 2O{H^ - } + IO_3^ - $$ $$\left( {\text{B}} \right)MnO_4^ - + 5F{e^{2 + }} + 8{H^ + } \to $$ $$\underline {\left( {{\text{ii}}} \right)} + 5\underline {\left( {{\text{iii}}} \right)} + 4{H_2}O$$

(i) (ii) (iii)

(a) $$Mn{O_2}$$ $$M{n^{2 + }}$$ $$F{e^{3 + }}$$

(b) $$M{n^{2 + }}$$ $$Mn{O_2}$$ $$F{e^{3 + }}$$

(c) $$Mn{O_2}$$ $$MnO_4^{2 - }$$ $$Fe{\left( {OH} \right)_3}$$

(d) $$MnO_4^{2 - }$$ $$M{n^{2 + }}$$ $$F{e_2}{O_3}$$

Question

Complete the given reactions.
$$\left( {\text{A}} \right)2MnO_4^ - + {H_2}O + {I^ - } \to $$ $$2\underline {\left( {\text{i}} \right)} + 2O{H^ - } + IO_3^ - $$
$$\left( {\text{B}} \right)MnO_4^ - + 5F{e^{2 + }} + 8{H^ + } \to $$ $$\underline {\left( {{\text{ii}}} \right)} + 5\underline {\left( {{\text{iii}}} \right)} + 4{H_2}O$$

(i) (ii) (iii)

(a) $$Mn{O_2}$$ $$M{n^{2 + }}$$ $$F{e^{3 + }}$$

(b) $$M{n^{2 + }}$$ $$Mn{O_2}$$ $$F{e^{3 + }}$$

(c) $$Mn{O_2}$$ $$MnO_4^{2 - }$$ $$Fe{\left( {OH} \right)_3}$$

(d) $$MnO_4^{2 - }$$ $$M{n^{2 + }}$$ $$F{e_2}{O_3}$$

	(i)	(ii)	(iii)
(a)	$$Mn{O_2}$$	$$M{n^{2 + }}$$	$$F{e^{3 + }}$$
(b)	$$M{n^{2 + }}$$	$$Mn{O_2}$$	$$F{e^{3 + }}$$
(c)	$$Mn{O_2}$$	$$MnO_4^{2 - }$$	$$Fe{\left( {OH} \right)_3}$$
(d)	$$MnO_4^{2 - }$$	$$M{n^{2 + }}$$	$$F{e_2}{O_3}$$

A. (a)

B. (b)

C. (C)

D. (d)

Answer : (a)

Solution :
$$2MnO_4^ - + {H_2}O + {I^ - } \to $$ $$2Mn{O_2} + 2O{H^ - } + IO_3^ - $$
$$MnO_4^ - + 5F{e^{2 + }} + 8{H^ + } \to $$ $$M{n^{2 + }} + 5F{e^{3 + }} + 4{H_2}O$$