Whicwhich of the following is an oxidation-reduction reaction?
so2(g) + h2o(l) mc010-1.jpg h2so3(aq)
caco3(s) mc010-2.jpg cao(s) + co2(g)
ca(oh)2(s) + h2co3(l) mc010-3.jpg caco3(aq) + 2h2o(l)
c6h12o6(s) + 6o2(g) mc010-4.jpg 6co2(g) + 6h2o(l)h of the following is an oxidation-reduction reaction?

Answer is: C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(l).

Balanced chemical reaction for cellular respiration (convert biochemical energy):  

C₆H₁₂O₆(s) + 6O₂(g) → 6CO₂(g) + 6H₂O(l).

In this reaction carbon is oxidized (lost electrons) and oxygen is reduced from oxidation number 0 to oxidation number -2 (gain electrons).

In other example atoms do not change their oxidation numbers.

Glucose (C₆H₁₂O₆) is a chemical compound composed of six carbon atoms, twelve hydrogen atoms and six oxygen atoms.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

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