1)ch3-ch(ch)-ch3+naoh-->ch3-ch=ch2+nacl+h2o

2)ch3-ch=ch3+h2o-->ch3-ch(oh)-ch3

3)ch2-ch-ch3+hcl-->ch3-ch-ch3

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cl

4)ch3-ch-ch3+koh-->kcl+h2o+ch2=ch-ch3 ( под ch в начале cl)

5)ch3-ch=ch2+h2o-->ch3-ch(oh)-ch3