Sodium sulfite reacts with potassium iodate to produce the sulfateion, aqueous m

Question

Sodium sulfite reacts with potassium iodate to produce the sulfateion, aqueous molecular iodine and water. a) For this reaction identify the atoms that are oxidized andreduced, and specify the oxidizing and reducing agents. b) Write both the balanced oxidation and reductionhalf-reactions.
I don't even know where to start writing the chemicalequation! a) For this reaction identify the atoms that are oxidized andreduced, and specify the oxidizing and reducing agents. b) Write both the balanced oxidation and reductionhalf-reactions.
I don't even know where to start writing the chemicalequation!

Explanation / Answer

a ) Sulfite is oxidised to sulfate. In this the oxidationstate of S increases from +4 to +6 . So it will reduce the otherthe other.So it is acting as reducing agent.      Iodate is turned into moleculariodine. In the iodate I is in +5 state and turned to 0 in iodinemolecule.So it will oxidise the other. So acts as oxidisingagent. b ) SO32- + O2 + 2H+ ----------->   SO42- +H2O  + 2e-       2 IO3-  +10e- ------------ > I2 + 3 O2       2 IO3-  +10e- ------------ > I2 + 3 O2

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