Uses of esters
2 marks · EasyA 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.
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Total mass: 1.2 grams. Uses: as a flavouring and as a perfume.
Also accept: 1.2 grams; flavouring and perfume; Total ester = 1.2 g; used as flavour and as perfume
Common mistakes: Giving only one use; Leaving out the total
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Marking points
M1 · 1 mark · Correctly adds the two masses to get 1.2 grams.
B1 · 1 mark · States the two main uses: as flavourings and as perfumes.
Worked solution
Total mass of ester = 0.5 g (for flavouring) + 0.7 g (for perfume) = 1.2 g
The two main uses of esters in this batch are as flavourings (for taste) and as perfumes (for pleasant smell).