Question

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

Answer 1

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.

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