In which change are only temporary dipole-induced dipole forces overcome?
A.
\(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(\mathrm{I}) \rightarrow \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(\mathrm{g})\)
B.
\(\mathrm{H}_{2} \mathrm{O}(\mathrm{s}) \rightarrow \mathrm{H}_{2} \mathrm{O}(\mathrm{I})\)
C.
\(\mathrm{O}_{2}(\mathrm{~s}) \rightarrow \mathrm{O}_{2}(\mathrm{I})\)
D.
\(\mathrm{C}_{4} \mathrm{H}_{10}(\mathrm{I}) \rightarrow \mathrm{C}_{4} \mathrm{H}_{10}(\mathrm{~s})\)
Exam No：9701_s20_qp_12 Year：2020 Question No：8
Answer:
C
Knowledge points:
3.6.3.2.1 instantaneous dipole – induced dipole (id-id) force, also called London dispersion forces
3.6.3.2.2 permanent dipole – permanent dipole (pd-pd) force, including hydrogen bonding
3.6.3.2.3 tdescribe hydrogen bonding and understand that hydrogen bonding is a special case of permanent dipole – permanent dipole force between molecules where hydrogen is bonded to a highly electronegative atom
Solution:
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