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Chemistry µGCSE:

Esters

10 quick questions - for iGCSE

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10 minutes maximum! (can you do it in 5?) iGCSE ONLY!!
1. The functional group of an ester is …
  • A.   –COOH
  • B.   –COO-
  • C.   –OH
  • D.   –CO-
2. An ester is formed by the reaction between a carboxylic acid and a(n)…
  • A.   alcohol
  • B.   oxidizing agent
  • C.   concentrated acid
  • D.   alkane

Q3-5: Ethanoic acid reacts with ethanol in the presence of concentrated sulfuric acid.

 
3. This is a(n)  reaction.

4. The function of concentrated sulfuric acid is to….

  • A.   oxidise the ethanol
  • B.   reduce the ethanoic acid
  • C.   reduce the pH of the mixture
  • D.   act as a catalyst
5. The name of the organic product formed is …..
  • A.   ethyl ethanoic
  • B.   ethyl ethanoate
  • C.   ethanol ethanoic
  • D.   ethanol ethanoate

Q6: Methanoic acid and ethanol react to form an organic product.

methanoic ecid + ethanol structure

 

6. The organic product formed is …..

product of methanoic acid + ethanol

7. The products of the reaction between ethanol and propanoic acid are ..

  • A.   ethyl propanoate and water
  • B.   propyl ethanoate and water
  • C.   ethyl propanoate and hydrogen
  • D.   propyl ethanoate and hydrogen

Q8+9 refer to the following structure:

Unknown compound structure

 
8. This compound would be formed by reacting together  …
  • A.   ethanol and ethanoic acid
  • B.   ethanol and methanoic acid
  • C.   methanol and ethanoic acid
  • D.   methanol and propanoic acid
9. The name of this compound is ….
  • A.   methyl ethanoate
  • B.   ethyl methanoate
  • C.   methyl propanoate
  • D.   propyl methanoate
10. The structure of the organic product formed by the reaction between propanoic acid and ethanol is …..

Organic structures x 4