16. Show the structures of all possible dehydration products. OH CH3 CH3 H,SO. 17. What products are formed when the following reactant is treated with HBr? Show the mechanism including intermediates and the movement of electrons with curved arrows. OH wy H30 3 CH3 HBr 18. What product is formed by the oxidation of the following alcohol? OH CH: CHE HOCI 19. What products form when the following ether reacts with HBr? CH: "CH CHE HBO 20. Find the product of the reaction of an epoxide with excess hydrochloric acid. HEC excess HCI