Chemistry 9701 · AS & A Level · Carboxylic acids and derivatives

Carboxylic acids and derivatives — practice question

Lactic acid ($2$-hydroxypropanoic acid), $\text{CH}_3\text{CH(OH)CO}_2\text{H}$, is present in sour milk. Which reaction might lactic acid undergo?

  • A$\text{CH}_3\text{CH(OH)CO}_2\text{H} + \text{CH}_3\text{OH} \rightarrow \text{CH}_3\text{CH(OCH}_3\text{)CO}_2\text{H} + \text{H}_2\text{O}$
  • B$\text{CH}_3\text{CH(OH)CO}_2\text{H} + \text{HCO}_2\text{H} \rightarrow \text{CH}_3\text{CH(O}_2\text{CH)CO}_2\text{H} + \text{H}_2\text{O}$
  • C$\text{CH}_3\text{CH(OH)CO}_2\text{H} + \text{NaHCO}_3 \rightarrow \text{CH}_3\text{CH(ONa)CO}_2\text{H} + \text{H}_2\text{O} + \text{CO}_2$
  • D$\text{CH}_3\text{CH(OH)CO}_2\text{H} + \text{Cl}_2 \rightarrow \text{CH}_3\text{CH(Cl)CO}_2\text{H} + \text{HOCl}$

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