Structural formula for pentene?

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Study for the IGCSE Organic Chemistry Test. Engage with flashcards and multiple-choice questions, complete with hints and detailed explanations. Prepare effectively to excel in your exam!

Multiple Choice

Structural formula for pentene?

Explanation:
Pentene is an alkene with five carbons and one C=C double bond, so the structure must show a double bond between two adjacent carbons. The correct arrangement is CH2=CH-CH2-CH2-CH3, where the first carbon has two hydrogens and the second carbon has one hydrogen because of the double bond, and the remaining three carbons form a single-bond chain. The other options depict all single bonds (pentane) or misplace hydrogens, so they do not show the required C=C.

Pentene is an alkene with five carbons and one C=C double bond, so the structure must show a double bond between two adjacent carbons. The correct arrangement is CH2=CH-CH2-CH2-CH3, where the first carbon has two hydrogens and the second carbon has one hydrogen because of the double bond, and the remaining three carbons form a single-bond chain. The other options depict all single bonds (pentane) or misplace hydrogens, so they do not show the required C=C.

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