Figure 3 shows the structure of two monomers - Edexcel - GCSE Chemistry - Question 5 - 2020 - Paper 1
Question 5
Figure 3 shows the structure of two monomers.
monomer A
HO–CH–CH–
monomer B
HOOC–CH–COOH
(i) Monomer B contains a carboxylic acid group.
Describe what you woul... show full transcript
Worked Solution & Example Answer:Figure 3 shows the structure of two monomers - Edexcel - GCSE Chemistry - Question 5 - 2020 - Paper 1
Step 1
Describe what you would see when a small amount of solid sodium carbonate is added to a solution of monomer B.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
When solid sodium carbonate is added to a solution of monomer B, which contains a carboxylic acid group, effervescence or bubbling will occur. This is due to the reaction between the sodium carbonate and the carboxylic acid, producing carbon dioxide gas. The solution may also show slight fizzing or foaming as the gas is released.
Step 2
Name the type of polymerisation that takes place and name the other product.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The type of polymerisation that takes place is condensation polymerisation. The name of the other product formed during this reaction is water.
Step 3
Give the name of this natural polymer.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The name of this natural polymer is DNA (deoxyribonucleic acid).
