Balance the following equations by oxidation number method:
a. `Fe^(2+) + Sn^(+2) rarr Sn^(4+) + fe^(2+)`
b. `MnO_(4)^(Ө) + H_(2)S rarr S+Mn^(2+)`
c. `Cr_(2)O_(7)^(2-) + 2I^(Ө) rarr 2Cr^(3+) + I_(2)`
d. `Zn + NO_(3)^(Ө) rarr Zn^(2+) + NH_(4)^(o+)`
e. `MnO_(4)^(Ө)+SO_(3)^(2-) rarr SO_(4)^(2-)+MnO_(2)`
f. `Cl_(2)+IO_(3)^(Ө) rarr IO_(4)^(Ө)` (in basic medium)

Answer

A

Explanation

a. `2Fe^(3+)+Sn^(2+)rarrSn^(4+)+2Fe^(2+)`
b. `2MnO_(4)^(ө)+5H_(2)S+6H^(o+)rarr2Mn^(2+)+5S+8H_(2)O`
c. `14H^(o+)+Cr_(2)O_(7)^(2-)_6I^(ө)rarr2Cr^(3)+3I_(2)+7H_(2)O`
d. `10H^(o+)+4Zn+NO_(3)^(ө)rarr4Zn^(2+)+NH_(4)^(o+)+3H_(2)O`
e. `2H^(o+)+2MnO_(4)^(ө)+3SO_(3)^(2-)rarr2MnO_(2)+3SO_(4)^(2-)+H_(2)O`
f. `Cl_(2)+IO_(3)^(ө)+2overset(ө)OHrarr2Cl^(ө)+IO_(4)^(ө)+H_(2)O`