Photo AI
Ethanol is produced by the fermentation of glucose solution - Edexcel - GCSE Chemistry - Question 4 - 2015 - Paper 1
Question 4
Ethanol is produced by the fermentation of glucose solution. (i) Give the name of the substance added to the glucose solution to provide the enzymes needed for ferm... show full transcript
Worked Solution & Example Answer:Ethanol is produced by the fermentation of glucose solution - Edexcel - GCSE Chemistry - Question 4 - 2015 - Paper 1
Step 1
Give the name of the substance added to the glucose solution to provide the enzymes needed for fermentation.
Answer
The substance added to the glucose solution to provide the enzymes necessary for fermentation is called yeast. Yeast contains enzymes that convert sugars into ethanol and carbon dioxide during the fermentation process.
Step 2
Which process is used to obtain a concentrated solution of ethanol from this dilute solution?
Answer
The process used to obtain a concentrated solution of ethanol from a dilute solution is D: fractional distillation. This method separates components in a mixture based on their boiling points, allowing for the separation of ethanol from water efficiently.
Step 3
State the effect of drinking alcohol on a person’s reaction times.
Answer
Drinking alcohol typically has a negative effect on a person’s reaction times. It impairs the central nervous system, leading to slower reflexes and decreased coordination, making it difficult to respond quickly to stimuli.