Structural formula for butene?

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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 butene?

Explanation:
Butene is an alkene with four carbon atoms, so its structural formula must include a C=C double bond and four carbons in the chain. The best representation shows a double bond between the first two carbons and continues with two more carbons, giving CH2=CH-CH2-CH3. This matches but-1-ene, the four-carbon chain with a double bond. The other options either show only single bonds (no C=C) or mis arrange the carbon skeleton, which would correspond to alkanes like butane or other connectivity that does not depict butene.

Butene is an alkene with four carbon atoms, so its structural formula must include a C=C double bond and four carbons in the chain.

The best representation shows a double bond between the first two carbons and continues with two more carbons, giving CH2=CH-CH2-CH3. This matches but-1-ene, the four-carbon chain with a double bond.

The other options either show only single bonds (no C=C) or mis arrange the carbon skeleton, which would correspond to alkanes like butane or other connectivity that does not depict butene.

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