Multiple Choice
Which of the following bonds or interactions must be overcome for water (H_2O) to change from a liquid to a gas?
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13. Liquids, Solids & Intermolecular Forces
Intermolecular Forces
Multiple Choice
With which of the following compounds will NH_3 experience only dispersion (London) intermolecular forces?
A
HF
B
H_2O
C
CH_4
D
CO
Verified step by step guidance1
Identify the types of intermolecular forces present in each compound listed: HF, H_2O, CH_4, and CO.
Recall that NH_3 (ammonia) is a polar molecule capable of hydrogen bonding due to the N-H bonds and the lone pair on nitrogen.
Understand that hydrogen bonding occurs when a hydrogen atom is directly bonded to highly electronegative atoms like F, O, or N, leading to strong dipole-dipole interactions.
Analyze each compound: HF and H_2O both have hydrogen bonding because they contain H bonded to F and O respectively; CO is a polar molecule with dipole-dipole forces; CH_4 is nonpolar and only exhibits dispersion (London) forces.
Conclude that NH_3 will experience only dispersion forces when interacting with CH_4, since CH_4 cannot participate in hydrogen bonding or dipole-dipole interactions.
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