Describe and explain the gradual increase in melting and boiling points along a homologous series as chain length grows, using the increasing strength of London dispersion forces between larger molecules.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2023–2025.
But-2-ene and other alkenes serve as starting materials for a wide range of compounds. (i) Predict the product formed when but-2-ene reacts with bromine. (ii) Outline why but-2-ene, unlike butane, readily undergoes this type of reaction. (iii) State the…
Which of these alkanes boils at the lowest temperature? A. CH3CH2CH2CH2CH3 B. C(CH3)4 C. (CH3)2CHCH2CH3 D. CH3CH2CH2CH2CH2CH3
The graph shows the boiling points of five straight-chain carboxylic acids and of the five methyl esters that have the same relative formula masses as the acids. (i) Outline why the carboxylic acids have higher boiling points than the esters with the same…
Methanol and butan-1-ol are members of the same homologous series. (i) Name the class of compound and the functional group that characterize this series. (ii) State the strongest intermolecular force between molecules of either alcohol. (iii) Predict one type…
Which statement best explains why the boiling points of the straight-chain alkanes rise from methane to pentane? A. The carbon–hydrogen bonds become stronger B. Longer molecules have more electrons, so the London (dispersion) forces between them are stronger…
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