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 C
H
B C
i H
... show full transcript
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 is a straight-chain alkane, and its molecular formula is C₄H₁₀.
Step 2
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 primary reason is the different concentrations of ethanol in whisky and beer. Whisky generally contains a higher concentration of alcohol than beer. Consequently, when consuming 25 cm³ of whisky, a driver absorbs more ethanol. This increased ethanol absorption results in greater impairment of motor skills, slower reaction times, and reduced judgment. As a result, the risk of accidents is heightened after drinking whisky compared to beer, even when the volume consumed is the same.
Step 3
Give the name of the homologous series in which ethanoic acid is found.
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Answer
The homologous series that includes ethanoic acid is the 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:
