Which of the following statements would apply to compounds that belong to the same homologous series?
I they have similar physical properties
II they have similar chemical properties
III they contain the same functional group
IV they have the same molecular formula but different structures
A - VCE - SSCE Chemistry - Question 11 - 2007 - Paper 1
Question 11
Which of the following statements would apply to compounds that belong to the same homologous series?
I they have similar physical properties
II they have simila... show full transcript
Worked Solution & Example Answer:Which of the following statements would apply to compounds that belong to the same homologous series?
I they have similar physical properties
II they have similar chemical properties
III they contain the same functional group
IV they have the same molecular formula but different structures
A - VCE - SSCE Chemistry - Question 11 - 2007 - Paper 1
Step 1
I they have similar physical properties
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Answer
Compounds in the same homologous series often exhibit similar physical properties, such as boiling points and melting points, due to their similar molecular structures.
Step 2
II they have similar chemical properties
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Answer
While compounds in a homologous series possess similar chemical properties owing to their related functional groups, they may react differently depending on the number of carbon atoms present.
Step 3
III they contain the same functional group
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Answer
All compounds within the same homologous series contain the same functional group, which is essential for them to exhibit related chemical behaviors.
Step 4
IV they have the same molecular formula but different structures
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Answer
This statement is partially accurate because homologous series refer to compounds that share a general formula (e.g., CnH2n+2 for alkanes) but differ in the arrangement and number of carbon atoms, leading to structural variations.
Step 5
Conclusion
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Answer
Based on the analysis above, all statements I, II, III, and IV correctly apply to compounds that belong to the same homologous series. Therefore, the correct choice is D: I, II, III and IV.
