Сделайте превращение! CH4 → CH3CI → CH3OH→ HCOOH→ HCOOCH3
I. CH4+Cl2=CH3Cl+HCl II. CH3Cl+H2O=CH3OH+HCl III. CH3OH=HCOH+H2 IV. HCOH+Ag2O=HCOOH+2Ag V. HCOOH+CH3OH=HCOOCH3+H2O