Question detail
What is the molecular formula of butene (C4H8) when 16 g of butene is used?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactions of alkenes and alcohols (chemistry only)
Question
- A. 0.5 mol
- B. 1 mol
- C. 2 mol
- D. 4 mol
Answer
The correct option is 1 mol.
Explanation
The correct option is 1 mol. 1 mol is correct because it directly supports the approved learning objective to represent alkene molecules in displayed, structural and molecular formula forms. This belongs to Structure and formulae of alkenes within Reactions of alkenes and alcohols (chemistry only), so the answer must use the correct organic chemistry context. The other options are incorrect when they confuse the organic family, formula type, reaction condition, product, or property being tested. Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams.
Common mistake
Misunderstanding Alkene Representation
Students often confuse the displayed formula with the structural formula of alkenes, leading to incorrect representations.
Review the differences between displayed and structural formulas, ensuring to practice drawing both types for various alkenes.
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