Question

In the reaction 2H2S + 3O2 -> 2SO2 +2H2O, the oxidizing agent is
1.oxygen
2.water
3.sulfur dioxide
4.hydrogen sulfide

oxygen?

Answer 1

I agree.
Loss of electrons is oxidization.
Gain of e is reduction.
The substance oxidized is the reducing agent.
The substance reduced is the oxidization agent.
Therefore, oxidizing agent is reduced which means gain of e. O2 goes from zero to -2. That's a gain of electrons.

Answer 2

water

Answer 3

sulfur dioxide

Answer 4

Which is reducing agent?

Answer 5

its oxygen