Va rog, am nevoie urgent! Dau coroana , macar primul exercitiu

1.
alcanii raspund la FM. generala CnH2n+2
=> 14n+2 = 72 => n = 5
C5H12
2.
C5H12 + Cl2 --lumina--> C5H11Cl + HCl
C5H12 + 8O2 --> 5CO2 + 6H2O
CH3-CH2-CH2-CH2-CH3 <==AlCl3/100oC=> CH3-CH-CH2-CH3
CH3