Compare the strength of the London dispersion forces in carbon dioxide t o those

Question

Compare the strength of the London dispersion forces in carbon dioxide to those in carbon disulfide. 1. Which is true: a)The London forces in CS2(l) are stronger than those in CO2 (l) or b)The London forces in CO2 (l) are stronger than those in CS2 (l). 2. Why does this pattern exist? a) Becaue of greater polarization in CS2 (l), between C and S atoms b) Because of greater polarization in CO2 (l), between C and O atoms c) Because of greater dipole-dipole bonding in CS2 (l), among different CS2 molecules d) because of greater dipole-dipole bonding in CO2 (l) , among different CO2 molecules. 3. Which of these two substances would you expect to have the higher boiling point? a) CO2 (l) has a higher boiling point b) CS2 (l) has a higher boiling point.

Explanation / Answer

(1)

a)The London forces in CS2(l) are stronger than those in CO2 (l)

(2)

a) Becaue of greater polarization in CS2 (l), between C and S atoms

(3)

b) CS2 (l) has a higher boiling point.

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