Question

CH3-CH-CH3+Br2-X1+KOH(cп.р)-X2+HBr-X3

         CH3

Answer 1

1. C4H10+Br2 = C4H9Br+HBr

2. C4H9Br+KOH = C4H9OH+KBr

3. C4H9OH+HBr = C4H9Br+H2O

X1 = X3 = C4H9Br           X2 = C4H9OH