school
Acemy

Intermolecular Forces

AP Chemistry· difficulty 4/5

Among CH4\text{CH}_4, NH3\text{NH}_3, H2O\text{H}_2\text{O}, HF\text{HF}, the substance with the highest boiling point is

  • A

    H2O\text{H}_2\text{O} (extensive H-bonding network)

    check_circle
  • B

    HF\text{HF} (strong but linear H-bond chain)

  • C

    NH3\text{NH}_3

  • D

    CH4\text{CH}_4 (only LDF)

Explanation

H2_2O can form ~2 H-bonds per molecule (each O has 2 lone pairs and 2 H), creating a 3D network. HF forms only 1 H-bond chain. H2_2O bp = 100°C, HF bp = 19.5°C.

Want 10 more like this — adaptive to your weak spots?

Practice 10 like thisarrow_forwardPredict my AP score

Related questions

auto_awesomeAll Toolsquestion_answerHomework Q&Amenu_bookAP & SAT PreptimelineLearn Mode
AP Chemistry · Intermolecular Forces Practice Question | Acemy