4.2.. F.g alcani : CnH2n+2 ; nr atomi C alcan = nr atomi alchena
%C=mC/M*100 => 83,72=12n/14n+2*100 => 1200n=1172,08n+167,44 => n=6
F.M alchena = C6H12 -> hexena
a) --
b)
C-C=C-C-C -> 4-metil-2-pentena
|
C
mai cauta tu..
c) C=C-C-C-C-C
C-C=C-C-C-C
C-C-C=C-C-C