What happens in a voltaic cell?

Question

a. chemical energy changed to electrical energy

b. electrical energy changed to magnetic energy

c. magnetic energy changed to electrical energy

d. electrical energy changed to chemical energy

What is the oxidizing agent in reaction I- + MnO4---> I2 + MnO2

I-

I2

MnO4

MnO2

What balances charges that may build up as reduction & oxidation occur in voltiac cell

a. electrolytes solutions

b. one of half-cells

c. salt bridge

d. moving electron

Thanks for all the help I am taking an onlilne Chem class (supposed to be HS) and have no teacher, no books and no one I know has a clue about Chem. Thanks again for the help:)

Answer 1

What happens in a voltaic cell?

a. chemical energy changed to electrical energy

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What is the oxidizing agent in reaction I- + MnO4---> I2 + MnO2

MnO4

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What balances charges that may build up as reduction & oxidation occur in voltiac cell

c. salt bridge