The table lists some properties of the straight-chained carbon compounds W, X, Y and Z - HSC - SSCE Chemistry - Question 15 - 2016 - Paper 1
Question 15
The table lists some properties of the straight-chained carbon compounds W, X, Y and Z.
| Compound | Reactivity in bromine water | Solubility in water |
|----------... show full transcript
Worked Solution & Example Answer:The table lists some properties of the straight-chained carbon compounds W, X, Y and Z - HSC - SSCE Chemistry - Question 15 - 2016 - Paper 1
Step 1
Identify Compound W
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Answer
Compound W is described as 'rapidly decolourises' in bromine water, indicating it is likely an alkene. Therefore, it could be a compound with a double bond having a propene structure.
Step 2
Identify Compound X
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Answer
Compound X is 'unreactive' in bromine water and 'insoluble' in water. This suggests that it is likely an alkane, specifically butane (C₄H₁₀).
Step 3
Identify Compound Y
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Answer
Compound Y is 'unreactive' in bromine water but 'soluble' in water, suggesting that it has functional groups that allow it to dissolve, likely being an alcohol or a similar compound, for example, methanol (CH₃OH).
Step 4
Identify Compound Z
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Answer
Compound Z is 'unreactive' in bromine water and 'partly soluble' in water, which indicates that it may be a larger alcohol or ether, possibly ethanol (C₂H₅OH).
Step 5
Select the Correct Option
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Answer
Based on the identification: W (C₃H₆), X (C₄H₁₀), Y (C₂H₅OH), and Z (C₂H₅OH), the answer is (A), matching the compounds with their respective characteristics.
