Which of the following is an oxidation-reduction reaction?
• so2(g) + h2o(1) h2so3(aq)
• caco3(s) , cao(s) + co2(g)
ca(oh)2(s) + h2co3(1) caco3(aq) + 2h2o(1)
• csh1206(s) + 602(9) _ , 6c02(g) + 6h20 (7

C₆H₁₂O₆ + 6 O₂ ⇒ 6 CO₂ + 6 H₂O

This is an oxidation-reduction reaction, because oxidation numbers of carbon and oxygen atoms are different than before reaction.

(-_-(-_-)-_-)

the answer is a. co2, this would be colder than the : )

explanation:

it is the most commonly accepted one