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1) CH3-CH (OH) -CH3+H2O- (Hg) ->CH3-C (O) -CH32) CH3-C (O) -CH3+H2->CH3-CH (OH) -CH33) CH3-CH (OH) -CH3+HBr->CH3-CHBr-CH3+H2O; 4) CH3-CHBr-CH3+KOH (спирт) ->CH2=CH-CH3+KBr+H2O; 5) CH2=CH-CH3+H2O->CH3-CH (OH) -CH3.