1) CH2=CH-CH2-CH3 Izomeri CH3-CH=CH-CH3 (izomeri cis, trans) CH2=C(CH3)-CH3 => 1-butena este alchena 2) A + HBr => CH3-CH(Br)-CH2-CH3 2-bromobutan B (NaOH) => CH3-CH=CH-CH3 + HBr 2-butena C + H2O => CH3-CH(OH)-CH2-CH3 2-butanol 3) ppuritatea = m pura/m impura * 100 m pura = 300*56/100 = 168 g A M A = 4*12+8*1 = 56 M D = 4*12+10*1+16 = 74 56 g A............74 g D 168 g A.............a a = 222 g D
