IB Chemistry SL 2.2.8 Intermolecular Forces Question Bank

Practise IB Chemistry SL 2.2.8 by linking molecular size and polarity to London forces, dipole interactions and hydrogen bonding in substances.

Exam points

deduce the intermolecular forces present from molecular polarity and functional groups
compare London-force strength using electron count, molecular size and contact surface
draw a hydrogen bond from an O-H or N-H donor to a valid lone-pair acceptor

[Maximum number: 1]

Ethyne, $\mathrm{C}_{2} \mathrm{H}_{2}$ , reacts with oxygen in welding torches.

Identify the type of interaction that must be overcome when liquid ethyne vaporizes.

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