Which of the following compounds would be the most water soluble?
A
B
C
D
 - Scottish Highers Chemistry - Question 2 - 2017
Question 2
Which of the following compounds would be the most water soluble?
A
B
C
D
B
C
D
 - Scottish Highers Chemistry - Question 2 - 2017
Step 1
Identify the water solubility of each compound
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Answer
To determine which compound is the most water soluble, we should consider the presence of hydroxyl (–OH) groups, which can form hydrogen bonds with water. Compound D contains multiple hydroxyl groups, increasing its hydrophilicity.
Step 2
Compare the structure of each compound
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Answer
Compound A: contains no polar functional groups, likely hydrophobic.
Compound B: has one hydroxyl group but still predominantly hydrophobic.
Compound C: contains multiple carbon chains with some polar character, but fewer hydroxyl groups compared to D.
Compound D: has two hydroxyl groups which make it highly polar and thus more soluble in water.
Step 3
Conclusion
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Answer
Based on the analysis, Compound D is the most water soluble due to its higher number of hydroxyl groups, which enhance its ability to interact favorably with water.
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