Question

Which of the following is an oxidation-reduction reaction?
- SO2(g) + H2O(I)—>H2SO3(aq)
-CaCO3(S)—>CaO(s)+CO2(g)
-Ca(OH)2(s)+H2CO3(I)—>CaCO3(aq)+2H2O(I)
-C6H12O6(s)+6O2(g)—>6CO2+6H2O(I)

Answer 1

Hi there,

It is the last one

C6H12O6 + 6O2 >> 6CO2 + 6 H2O

Carbon oxidation no incrases from 0 to 4, while oxygen decreases from 0 to -2

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