Photo AI
Figure 10 shows a flask fitted with a cotton wool plug - Edexcel - GCSE Chemistry - Question 10 - 2020 - Paper 1
Question 10
Figure 10 shows a flask fitted with a cotton wool plug. The flask contains an aqueous solution of a carbohydrate. (i) State two steps that need to be taken to turn ... show full transcript
Worked Solution & Example Answer:Figure 10 shows a flask fitted with a cotton wool plug - Edexcel - GCSE Chemistry - Question 10 - 2020 - Paper 1
Step 1
State two steps that need to be taken to turn the solution of the carbohydrate in the flask into a solution of ethanol.
Answer
-
First, add a suitable dehydrating agent, such as concentrated sulfuric acid, to the carbohydrate solution in the flask. This will facilitate the removal of water from the carbohydrate, promoting the formation of ethanol.
-
Next, heat the mixture gently to ensure that the dehydration reaction takes place, which will convert the carbohydrates into ethanol through a series of reactions.