The reaction equation CH4 – CH2Cl – CH3OH – HCOH – HCOOH indicate the conditions of implementation and naming all substances.

CH4 + Cl2 = CH3Cl + HCl (in the light) – chloromethane, methyl chloride
CH3Cl + KOH (aq) = CH3OH + KCl – methanol, methyl alcohol
CH3OH –Cu (OH) 2 = HCOH – formalin, formic aldehyde, methanal
HCOH + Сu (OH) 2 = HСOOH – – microacid, methanoic acid

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