Escreva as equações de preparo do butano a partir de: a) brometo de butila b) brometo de sec-butila c) cloreto de etila d) but-1-eno e) but-2-eno

a) C4H9Br + NaOH → C4H10 + NaBr + H2O b) (CH3)2CHCH2Br + NaOH → (CH3)2CHCH2OH + NaBr c) C2H5Cl + CH3CH2MgBr → CH3CH2CH2CH3 + MgClBr d) CH3CH=CHCH3 + HBr → CH3CHBrCH=CH2 e) CH3CH=CHCH3 + HBr → CH3CHBrCH=CH2