Question

In each of the following balanced oxidation-reduction equations, identify those elements that undergo changes in oxidation number and indicate the magnitude of the change in each case.

Part A

I2O5(s)+5CO(g)→I2(s)+5CO2(g)

What are the elements changing the oxideation number?

Enter your answers as chemical symbols separated by a comma.

Indicate the magnitude of the change in this case.

Part B

2Hg2+(aq)+N2H4(aq)→2Hg(l)+N2(g)+4H+(aq)

What are the elements changing the oxideation number?

Enter your answers as chemical symbols separated by a comma.

Indicate the magnitude of the change in this case.

Part C

3H2S(aq)+2H+(aq)+2NO−3(aq)→3S(s)+2NO(g)+4H2O(l)

What are the elements changing the oxideation number?

Enter your answers as chemical symbols separated by a comma.

Indicate the magnitude of the change in this case.

Answer 1