А) CH₄+4O₂=CH₂O+H₂O+2O₃ CH₂O+2CU(OH)₂=HCOOH+CU₂O+2H₂O HCOOH+CH₃OH=HCOOCH₃+H₂O б) СH≡CH " alt=" \frac{H₂O,Hg²⁺}{}> " align="absmiddle" class="latex-formula">CH₃COH CH₃COH+Ag₂O=CH₃COOH+2Ag CH₃COOH+Cl₂=CH₂ClCOOH+HCl CH₂ClCOOH+C₂H₅OH=CH₂ClCOOC₂H₅+H₂O