(a)[1]
Draw the displayed formula for ethanedioic acid.
(b)[4]
The three acids, propanoic acid, methanoic acid and ethanedioic acid, may be told apart by using a pair of chemical tests. Neither reagent is an acid-base indicator. Identify two appropriate testing reagents and complete Table 10.1 to show the observations from each test.
(c)[2]
When propanoic acid reacts with chlorine gas in the presence of ultraviolet light, a mixture of products is produced. One of these products is 2,2-dichloropropanoic acid. Explain why 2,2-dichloropropanoic acid is stronger than propanoic acid. Refer to the structure of each compound in your answer.