- In the combustion reaction between butane (C 4 H 10 ) and oxygen, the oxidation
state of carbon goes from
(A) +4 to +1, so the carbon is reduced
(B) +2.5 to +4, so the carbon is reduced
(C) +2.5 to +4, so the carbon is oxidized
(D) −2.5 to −4, so the carbon is oxidized
(E) −2.5 to +4, so the carbon is oxidized
- In the decomposition reaction of a hydrogen peroxide solution:
2H 2 O 2 (aq) → 2H 2 O(l) + O 2 (g)
(A) the hydrogen is being oxidized
(B) the hydrogen is being reduced
(C) the oxygen is being oxidized
(D) the oxygen is being reduced
(E) both (C) and (D)
