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Functional Groups

Question 2 • R282: GR CA-Chemistry B (Grade Repair)

CH2CHCH2CH2CH2CH3

Answer
A
hexane
B
hexene
C
pentane

Explanation

The formula contains six carbon atoms, so the compound has the prefix hex-. The first two carbons are written as CH2CH; to satisfy their usual bonding, they form a double bond, making the compound an alkene. Therefore, it is hexene, not saturated hexane or five-carbon pentane.

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