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Balance the following equations using ox...

Balance the following equations using oxidation number method :
`{:((i),MnO_4^(-)+H^(+)+Fe^(2+),rarr,Mn^(2+)+Fe^(3+)+H_2O),((ii)," "Zn+NO_3^(-)+H^(+),rarr,Zn^(2+)+H_2O),((iii),H_2SO_3+I_2+H_2O,rarr,H_2SO_4+HI),((iv)," "HNO_3+I_2,rarr,HIO_3+NO_2+H_2O),((v), MnO_4^(-)+H_2O_2,rarr,MnO_4^(2-)+O_2):}`
(in alkaline medium)

Text Solution

Verified by Experts

The correct Answer is:
(i) `MnO_4^(-) +8H^(+)+5Fe^(2+)rarrMn^(2)+5Fe^(3+)+4H_2O`
(ii) `" "4Zn+NO_3^(-) +10H^(+)rarr4Zn^(2+)+NH_4^(+)+3H_2O`
(iii) `H_2SO_3+I_2+H_2O rarr H_2SO_4+2HI`
`" "10HNO_3+I_2 rarr 2HIO_3+10NO_2+4H_2O`
(v) `2MnO_4^(-) +2OH^(-) +H_2O_2 rarr 2MnO_4^^(2-) +O_2+2H_2O`
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