Gradegorilla Chemistry

Chemistry µGCSE:
Carboxylic Acids

..and condensation polymers

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10 minutes maximum! (can you do it in 5?)
1. The functional group of the carboxylic acid family is … A. C=C B. -O-H C. –COO- D. –COOH
2. Ethanoic acid is formed when ethanol is exposed to microbes in the air. This type of reaction is an example of… A. oxidation B. reduction C. fermentation D. esterification
3. The displayed formula for carboxylic acid A is:
The name of carboxylic acid A is ….. A. butanoic acid B. propanoic acid C. methanoic acid D. ethanoic acid
Q4-5 Ethanoic acid reacts with magnesium metal.
4.The name of the gas formed in this reaction is … A. carbon dioxide B. oxygen C. hydrogen D. ethane
5. The name of the salt formed in this reaction is … A. magnesium ethanoate B. magnesium ethanoic C. magnesium ethanide D. magnesium ethoate
6. A salt is formed when a carboxylic acid reacts with sodium carbonate. The other product(s) of this reaction are… A. hydrogen only B. water only C. carbon dioxide and water D. carbon dioxide and hydrogen
7. The approximate pH of ethanoic acid is … A. pH 1 B. pH 5 C. pH 9 D. pH 13
8. Ethanoic acid reacts with ethanol to form … A. a salt B. an ester C. a polymer D. a sugar
Q9-10: Polyesters such as terylene are formed by the reaction between a dicarboxylic acid with a diol. Polyesters are condensation polymers.
9. Polyester is known as a condensation polymer because during its formation…. A. gas turns into liquid B. only one product is formed C. a long chain molecule is formed D. water is also formed
10. Block diagrams of monomer A (a dicarboxylic acid) and monomer B (a diol) are:
The repeating unit of the polymer formed from these monomers is: