Past paper question AS Chemistry Watch

Seni007
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Why does NCl3 have a similar boiling point to C2H5OH?

Its a 4 marker plz helpp
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charco
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(Original post by Seni007)
Why does NCl3 have a similar boiling point to C2H5OH?

Its a 4 marker plz helpp
Coincidence (4)

But you will get the marks for discussing the relative effect of each tpe of intermolecular force in the two molecules.

For example:

Nitrogen trichloride: London dispersion forces and dipole-dipole interaction. The LDF are strong because of the (relatively) high relative mass of the molecule (120.5). Dipole dipole interactions are weak.
Ethanol: London dispersion forces, dipole dipole interactions and hydrogen bonding. The LDF are much weaker as Mr = 46, but the hydrogen bonding increases the boiling point. Dipole dipole interactions are weak.
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Seni007
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Thx u are a star
(Original post by charco)
Coincidence (4)

But you will get the marks for discussing the relative effect of each tpe of intethrmolecular force in the two molecules.

For example:

Nitrogen trichloride: London dispersion forces and dipole-dipole interaction. The LDF are strong because of the (relatively) high relative mass of the molecule (120.5). Dipole dipole interactions are weak.
Ethanol: London dispersion forces, dipole dipole interactions and hydrogen bonding. The LDF are much weaker as Mr = 46, but the hydrogen bonding increases the boiling point. Dipole dipole interactions are weak.
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