Question

What is reduced and oxidized in the following reaction?

3 H2S (aq) + 2 H+(aq) + 2 NO3−(aq) → 3 S(s) + 2 NO(g) + 4 H2O (ℓ)

Sulfur is reduced and nitrogen is oxidized.

Sulfur is oxidized and nitrogen is reduced.

Sulfur is oxidized and hydrogen is reduced.

Sulfur is oxidized and oxygen is reduced.

Hydrogen is oxidized and nitrogen is reduced.