Осуществите цепочку превращений ch4-c2h2-c2h4-c2h5oh-ch3cho-ch3cooh -ch3coona-ch4

ch4-> c2h2-> c2h4-> c2h5oh-> ch3cho-> ch3cooh-> ch3coona-> ch4

2 ch4=c2h2+3 h2

c2h2+h2=c2h4

c2h4+h2o=c2h5oh

c2h5oh+cuo=cu+ch3cho+h2o

ch3cho+cu(oh)2=ch3cooh+cu2o+h2o

ch3cooh + naoh = ch3coona + h2o

ch3coona + naoh = ch4 + na2co3

4al + 3o2 = 2al2o3

получается сумма коэффициентов равна 9.