2) ch2cl-ch2-ch3+koh=ch2=ch-ch3+kcl+h2o
ch2=ch-ch3+hbr=ch3-chbr-ch3
ch2=ch-ch3+h2o=ch3-ch(oh) -ch3
3)
2) ch2cl-ch2-ch3+koh=ch2=ch-ch3+kcl+h2o
ch2=ch-ch3+hbr=ch3-chbr-ch3
ch2=ch-ch3+h2o=ch3-ch(oh) -ch3
3)