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The alkanes are members of a homologous series - OCR Gateway - GCSE Chemistry: Combined Science - Question 7 - 2021 - Paper 10
Question 7
The alkanes are members of a homologous series. Which statement does not explain why alkanes are a homologous series? A They are hydrocarbons. B They have the s... show full transcript
Worked Solution & Example Answer:The alkanes are members of a homologous series - OCR Gateway - GCSE Chemistry: Combined Science - Question 7 - 2021 - Paper 10
Step 1
Which statement does not explain why alkanes are a homologous series?
Answer
The correct answer is A: They are hydrocarbons.
Explanation
Alkanes are indeed hydrocarbons; however, this statement does not specifically explain their classification as a homologous series. A homologous series is defined by a consistent increase in molecular size, similar chemical properties, and a general formula (C_nH_(2n+2)). Therefore, while being hydrocarbons is a true statement about alkanes, it does not contribute to the concept of them forming a homologous series.