<span>CnH(2n-2) - общая формула.
</span><span>12n+1*(2n-2)=54
</span><span>n=5.
</span><span>CH₃-CH₂-CH₂-C≡CH
</span>
C + 2H2 (t, p)= CH4
2CH4 (1500°)= C2H2 + 3H2
C2H2 + H2 (t, Pt)= C2H4
C2H4 + H2O = C2H5OH
2C2H5OH + 6O2 = 4CO2 + 6H2O
NiCl2+2H2O=Ni(OH)2+2HCl
Ni(OH)2---> (t) NiO+H2O
4Fe(OH)3+3Cu2S= Fe4S3+6Cu(OH)2