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_m
B C_4H_{10... 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 answer is B C₄H₁₀. Butane is identified as an alkane with the molecular formula 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 danger arises because of the amount of ethanol in the drinks. Whisky typically contains a higher concentration of alcohol per volume compared to beer, meaning that consuming 25 cm³ of whisky introduces more ethanol into the bloodstream than the same amount of beer. This leads to increased impairment of cognitive functions and motor skills relevant to driving. The physiological effects include slower reaction times and blurred vision, which heighten the risk of accidents.
Step 3
Give the name of the homologous series in which ethanoic acid is found.
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Answer
Ethanoic acid belongs to the carboxylic acids 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:
