Which of the following is the formula for a molecule of butane?
Put a cross (X) in the box next to your answer - Edexcel - GCSE Chemistry - Question 2 - 2013 - Paper 1
Question 2
Which of the following is the formula for a molecule of butane?
Put a cross (X) in the box next to your answer.
A C4H10
B C5H12
C C3H8
D C6H14
(ii)... show full transcript
Worked Solution & Example Answer:Which of the following is the formula for a molecule of butane?
Put a cross (X) in the box next to your answer - Edexcel - GCSE Chemistry - Question 2 - 2013 - Paper 1
Step 1
Which of the following is the formula for a molecule of butane? Put a cross (X) in the box next to your answer.
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Answer
The correct formula for butane is A, C₄H₁₀. Therefore, place a cross next to A.
Step 2
Draw the structure of a molecule of propene, showing all covalent bonds.
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Answer
The structure of propene, C₃H₆, can be drawn as follows:
H H
\\ /
C=C
/ \
H H
|
H
```
This structure shows all covalent bonds between the carbon and hydrogen atoms.
Step 3
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
In this reaction, ethanol is C, oxidised. While converting to ethanoic acid, ethanol loses electrons, thus undergoing oxidation.
Step 4
Describe what you would see when solid sodium carbonate is added to dilute ethanoic acid.
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Answer
When solid sodium carbonate is added to dilute ethanoic acid, you would observe bubbling or fizzing. This is due to the formation of carbon dioxide gas as a result of the acid-base reaction.
Step 5
Complete the balanced equation for this reaction.
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Answer
The balanced equation for the reaction of ethanoic acid with ethanol is:
