Complete the sentence by putting a cross (X) in the box next to your answer - Edexcel - GCSE Chemistry - Question 6 - 2016 - Paper 1
Question 6
Complete the sentence by putting a cross (X) in the box next to your answer.
Butane is an alkane.
The formula of a molecule of butane is
A C_nH_n
B C_4H_{... show full transcript
Worked Solution & Example Answer:Complete the sentence by putting a cross (X) in the box next to your answer - Edexcel - GCSE Chemistry - Question 6 - 2016 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
The correct formula for butane is B) C₄H_{10}. Butane is a straight-chain alkane with four carbon atoms and ten hydrogen atoms.
Step 2
(i) Suggest why it is more dangerous to drive a car after drinking 25 cm³ of whisky than it is after drinking 25 cm³ of beer.
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Answer
The main reason is the amount of ethanol present in each drink. Whisky typically has a higher concentration of alcohol compared to beer. Consuming 25 cm³ of whisky contains more ethanol, which affects the driver more significantly, causing increased impairment, longer reaction times, and reduced cognitive functions.
Step 3
(ii) Give the name of the homologous series in which ethanoic acid is found.
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Answer
Ethanoic acid belongs to the carboxylic acid homologous series.
Step 4
Write the balanced equation for this reaction.
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Answer
The balanced equation for the dehydration of propanol to form propene is:
