hard a level chemistry question! PLEASE HELP

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emccorquodale
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#1
Report Thread starter 3 years ago
#1
From the multiple choice section on an OCR A2 inorganic paper.

Which substances experience induced dipole dipole interactions?
1- c2h5oh (ethanol)
2-h20
3- SiO2

the answer is 1 and 2, so not SiO2 but I don't know why? I thought all compounds experienced induced d-d interaction.
please help lol
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username1817907
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#2
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Only simply molecular structures experience intermolecular forces.

Silicon dioxide has a giant covalent lattice structure, therefore does not experience IMFs so induced dipole dipole interactions cannot be present between SiO2 molecules.
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Alstair
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#3
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All do experience induced dipole dipole, are you sure that the question wasn't about permanent dipole dipole because SiO2 doesn't experience permanent dipole dipole while the other two do.
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