(45 pts) In which reaction is carbon reduced?

CO(g) + O2(g)CO2(g)

CO2(g) + H2O(l)H2CO3(aq)

CH4(g) + 2O2(g)CO2(g) + 2H2O(l)

C2H2(g) + H2(g)C2H4(g)

Reductio is gain of electrons, while oxdation is loss. The oxidtion states of carbon in the reaction will show either of oxidation or reduction occurrence.

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Explanation:

Electrons displacement is explained for each reaction below:

the answer to your question is c.

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