Balance the following equations by the ion electron method:
a. `MnO_(4)^(Ө) + Cl^(Ө) + H^(o+) rarr Mn^(2+) + H_(2)O + Cl_(2)`
b. `Cr_(2)O_(7)^(2-) + I^(Ө) + H^(o+) rarr Cr^(3+) + H_(2)O + I_(2)`
c. `H^(o+) + SO_(4)^(2-)+I^(Ө) rarr H_(2)S+H_(2)O+I_(2)`
d. `MnO_(4)^(Ө)+Fe^(2+) rarr Mn^(2+) + Fe^(3+) + H_(2)O`

Answer

A

Explanation

a. `2MNO_(4)^(Ө) + 16H^(o+) + 10Cl^(Ө) rarr 2Mn^(2+) + 8H_(2)O+5Cl_(2)`
b. `Cr_(2)O_(7)^(2-) + 14H^(o+)+6I^(Ө)rarr 2Cl^(3+) + 7H_(2)O+3I_(2)`
c. `10H^(o+) + SO_(4)^(2-) + 8I^(Ө)rarrH_(2)S + 4H_(2)O+4I_(2)`
d. `MNO-(4)^(Ө) + 8H^(o+)+5Fe^(2+) rarr Mn^(2+)+Fe^(3+) + 4H_(2)O`