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

№1

2p + 3mg = mg3p2

mg3p2 + 6hcl = 2ph3 + 3mgcl2

2ph3+4o2 = p2o5 + 3h2o

p2o5+h2o = h3po4

или же: 3p+5hno3+2h2o = 3h3po4+5no

2h3po4+3ca(oh)2 = ca3(po4)2+6h2o

№2

p+hno3+h2o-h3po4+no

p0 – 5e- = p+5 |3

n+5 + 3e- = n+2 |5

3p+5hno3+2h2o = 3h3po4+5no

n(naoh) = v(p-panaoh)*c = 0,4л*0,6моль/л = 0,24 моль

m(naoh) = n(naoh)*m(naoh) = 0,24*40 = 9,6 г

m2(p-panaoh) = m(naoh)/w(naoh) = 9,6/0,1 = 96 г

v2(p-panaoh) = m2(p-panaoh)/po = 96/1,23 = 78 мл.