How many structural isomers has butane, C4H10, including butane itself?
Answer and explanation
Correct answer: D. Two: butane and 2-methylpropane
- Step 1: Arrange four carbons: a straight chain gives butane.
- Step 2: A three-carbon chain with a methyl on carbon 2 gives 2-methylpropane.
- Step 3: No other arrangement exists, so two isomers.
Answer
two.
Why not the others: 2-methylbutane has five carbons; one ignores branching; but-1-ene and but-2-ene have the formula C4H8.
Practise more Organic Chemistry and Chemical Analysis.
Free questions with an explanation for every one, and full timed Victorian VCE mock tests.
More Organic Chemistry and Chemical Analysis questions
- What is the IUPAC name of the compound with the structure CH3CH2CH(CH3)CH3?
- Ethanol reacts with ethanoic acid in the presence of concentrated sulfuric acid. What are the organic product and the role of the sulfuric a…
- What is the systematic name of CH3CH2COOCH3?
- Propan-1-ol is heated with acidified potassium dichromate solution until the reaction is complete. What are the final organic product and th…
- Propene reacts with bromine water. Which observation and product are expected?
- Which products form when a triglyceride is heated with aqueous sodium hydroxide (saponification)?