Carboxylic Acids Quiz
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5 questions, one answer each
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1. What is the general formula of a carboxylic acid?
- A. CnH2n+2
- B. CnH2n+1OH
- C. CnH2n+1COOH
- D. CnH2n
2. Which reagent can be used to oxidise ethanol to ethanoic acid in the laboratory?
- A. Aqueous sodium hydroxide
- B. Acidified aqueous potassium manganate(VII)
- C. Dilute hydrochloric acid
- D. Aqueous ammonia
3. What products form when ethanoic acid reacts with sodium carbonate?
- A. Sodium ethanoate and hydrogen only
- B. Sodium ethanoate, water and carbon dioxide
- C. Sodium ethanoate and oxygen
- D. Ethanol and carbon dioxide
4. What is formed when a carboxylic acid reacts with an alcohol in the presence of an acid catalyst?
- A. A salt and hydrogen
- B. An ester and water
- C. A carbonate and carbon dioxide
- D. An alkene and water
5. A student produces a fruity-smelling liquid by heating ethanoic acid with propanol and a few drops of concentrated sulfuric acid. Explain what type of reaction has occurred and name the type of product formed.
- A. Oxidation has occurred, forming a carboxylic acid
- B. Esterification has occurred, forming an ester (propyl ethanoate) and water, with sulfuric acid acting as the acid catalyst
- C. Fermentation has occurred, forming ethanol and carbon dioxide
- D. Neutralisation has occurred, forming a salt and water only