Balance the following redox reactions by ion-electron method.
A. MnO4–(aq) +I–(aq) ———>Mn02(s) + I2 (s) (in basic medium)
B. MnO4–(aq) + S02(g) ——-> Mn2+(aq) +H2S04–(in acidic solution)
C. H2O2(aq) + Fe2+(aq) ———-> Fe3+(aq) + H2O(l) (in acidic solution)
D. Cr2O72- (aq) + S02 (g)——> Cr3+ (aq) + SO42-(aq) (in acidic solution)
Answer:A
Balance the following redox reactions by ion-electron method.
A. MnO4–(aq) +I–(aq) ———>Mn02(s) + I2 (s) (in basic medium) B. MnO4–(aq) + S02(g) ——-> Mn2+(aq) +H2S04–(in acidic solution) C. H2O2(aq) + Fe2+(aq) ———-> Fe3+(aq) + H2O(l) (in acidic solution) D. Cr2O72- (aq) + S02 (g)——> Cr3+ (aq) + SO42-(aq) (in acidic solution)