1.
mCO2=35.2g
mC=35.2·12/44=9.6g
nC=9.6/12=0.8mol
mH2O=14.4g
mH=14.4·2/18=1.6g
nH=1.6/1=1.6mol
C:Н=0.8:1.6=1:2 это алкен
M(CnH2n)=1.93·29=56g/mol
CnH2n=56
12n+2n=56
14n=56
n=4
C4H8 бутен или циклобутан
2.
CH4=C2H2 1500°C
C2H2+[O]=CH3COH
CH3COH+Ag2O=CH3COOH+2Ag↓ t
2CH3COOH+2K=2CH3COOK+H2↑