Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Esters
68 practice questions
Topics covered
Practice questions
21–30 of 68
Question 21
2 marks · Easy
Answer and see the solution →Esters are used in both fruit-flavoured drinks and perfumes. Explain why esters are suitable for use in both these products.
Question 22
3 marks · Easy
Answer and see the solution →Table 1: Some esters and their typical uses. Ester Typical use Methyl butanoate Flavouring (apple) Ethyl ethanoate Solvent Propyl ethanoate Perfume Pentyl acetate Flavouring (banana) (a)[1 mark]Identify two esters from the table used as flavourings.
(b)[1 mark]Which ester from the table is used as a perfume?
(c)[1 mark]Give the fruit each flavouring (from part a) is associated with.
Question 23
1 mark · Easy
Answer and see the solution →State the main reason esters are chosen for making perfumes.
Question 24
3 marks · Easy
Answer and see the solution →(a)[1 mark]Name one ester used for a fruit flavouring in food.
(b)[1 mark]State what property of esters makes them useful as perfumes.
(c)[1 mark]Give one example of a product (other than food) where esters are used.
Question 25
3 marks · Easy
Answer and see the solution →(a)[1 mark]State one use of esters in the food industry.
(b)[1 mark]State one use of esters in the perfume industry.
(c)[1 mark]Give one property of esters that makes them suitable for these uses.
Question 26
2 marks · Easy
Answer and see the solution →A manufacturer wants to make a new strawberry-flavoured sweet. State which type of organic compound they should use to add the flavour and explain briefly why.
Question 27
2 marks · Easy
Answer and see the solution →A food company wants to make a new sweet product with a fruity taste and a pleasant smell. They plan to add 0.5 grams of an ester as a flavouring and 0.7 grams of an ester as a perfume in one batch.
State the total mass of ester (in grams) added to this batch and identify the two main uses of esters in this context.
Question 28
2 marks · Normal
Answer and see the solution →State two uses of esters in everyday life.
Question 29
4 marks · Normal
Answer and see the solution →A group of chemists are making compounds for use in food and cosmetic products.
(a)[1 mark]State one common property of esters that makes them useful as perfumes.
(b)[2 marks]Name two types of products (other than perfumes) where esters are commonly used as flavourings.
(c)[1 mark]Give a reason why chemists use mixtures of esters in artificial flavourings.
Question 30
3 marks · Normal
Answer and see the solution →Esters are added to both food and perfumes.
Explain why esters are suitable for use in each of these products. Give a reason for each use.