Question

Balance the following redox equation in
a. acidic solution
b. basic solution
MnO4- + SO2= SO42- + Mn2+

Answer 1

Solution.

a.

$2MnO4^- + 5SO2 + 2H2O = 5SO4^{2-} + 2Mn^{2+} + 4H^+$

b.

$2MnO4^- + 5SO2 + 4OH^- = 5SO4^{2-} + 2Mn^{2+} + 2H2O$

Answer:

a.

$2MnO4^- + 5SO2 + 2H2O = 5SO4^{2-} + 2Mn^{2+} + 4H^+$

b.

$2MnO4^- + 5SO2 + 4OH^- = 5SO4^{2-} + 2Mn^{2+} + 2H2O$