Question

13. What results would be expected if the following tests were carried out on 4- hydroxy-3-methoxybenzaldehyde ? (Explain your answers.) (a) H2O solubility (b) Tollens' test (c) Benedict's test 14. What practical applications might be made of the Tollen's reaction? 15. An unknown compound has a chemical formula of C3H.O. When chromic acid (containing chromate ions) was added to the unknown, the solution remained orange. The unknown was soluble in water. When NaOH and Kl/iodine were added to the unknown, a yellow precipitate formed. What is the structure of the unknown compound? 16. Would you expect 2-octanone to be soluble in water? Would you expect butanal to be soluble in water? Would either of them be more soluble in hexane than in water? Explain.