(a)[1]
Give the displayed formula of ethanedioic acid.
(b)[4]
The three acids, propanoic acid, methanoic acid and ethanedioic acid, may be told apart by using two chemical tests in combination. Neither reagent is an acid-base indicator. State two appropriate test reagents and fill in Table 10.1 to give the observations for each test.
(c)[2]
When propanoic acid reacts with chlorine gas in ultraviolet light, a mixture of products is produced. One of these is 2,2-dichloropropanoic acid. Explain why 2,2-dichloropropanoic acid is stronger than propanoic acid. In your answer, refer to the structure of both compounds.