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Balance the following overall reactions showing the half reactions as well as the balanced overall reactions:...

Balance the following overall reactions showing the half reactions as well as the balanced overall reactions:

a. CH3OH + O2 ----> CO2 + H2O (@ high pH)

b. HS- + MnO4- -----> S(s) + MnO2 (s) (@ high pH)

c. IO3- (iodate) + I- (iodade) ----> I2 (iodine) (@ low pH)

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