(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:

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vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.