Complete the sentence by putting a cross (✗) in the box next to your answer - Edexcel - GCSE Chemistry - Question 6 - 2016 - Paper 1
Question 6
Complete the sentence by putting a cross (✗) in the box next to your answer.
Butane is an alkane.
The formula of a molecule of butane is
A C₄H₈
B C₄H₁₀
C C₄H₈
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Worked Solution & Example Answer:Complete the sentence by putting a cross (✗) in the box next to your answer - Edexcel - GCSE Chemistry - Question 6 - 2016 - Paper 1
Step 1
Complete the sentence by putting a cross (✗) in the box next to your answer.
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Answer
The correct answer is B C₄H₁₀. Butane has the molecular formula C₄H₁₀, which indicates it is an alkane.
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 danger arises primarily from the differing amounts of ethanol present in each drink. Whisky typically contains a higher concentration of alcohol compared to beer. Consuming 25 cm³ of whisky means absorbing more ethanol, which can lead to greater impairment of cognitive functions and slower reaction times. This results in increased risks while driving, as alcohol affects coordination, reaction times, and overall judgment.
Step 3
(ii) Give the name of the homologous series in which ethanoic acid is found.
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Answer
Carboxylic acids.
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:
