Какие реакции возможны ch3-ch(ch3)-choh-ch2-ch3+h2so4=x1 x1+cl2=x2 x2+zn=x3 x3+hbr=

1)  CH3-CH(CH3)-CHOH-CH2-CH3 ---> CH3-C(CH3)=CH-CH2-CH3 + H2O;

2) CH3-C(CH3)=CH-CH2-CH3 + Cl2 ---> CH3-CCl(CH3)-CH(Cl)-CH2-CH3;

3) CH3-CCl(CH3)-CH(Cl)-CH2-CH3 + 2Zn = CH3-C(CH3)=CH-CH2-CH3 + ZnBr2;

4) CH3-C(CH3)=CH-CH2-CH3 + HBr ---> CH3-CBr(CH3)-CH2-CH2-CH3.