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–CH2–COOH
(a)(i) Monomer B contains a carboxylic acid group.
Describe what you ... 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, a reaction occurs due to the carboxylic acid group present in monomer B. This reaction typically produces carbon dioxide gas, which can be observed as effervescence (bubbles) in the solution. Additionally, there may be some fizzing or bubbling at the surface as the gas escapes.
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 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) or 'RNA' (ribonucleic acid), depending on the context.
