Problem: Arrange the following in order of increasing boiling point:    CsF, CH3Br, CH3OH, CH4A. CH4 < CH3Br < CH3OH < CsFB. CH3OH < CH4 < CH3Br < CsFC. CsF < CH3Br < CH3OH < CH4D. CH4 < CH3OH < CH3Br < CsFE. CH3OH < CH3Br < CsF < CH4

FREE Expert Solution

We’re being asked to rank the molecules with increasing boiling point: CsF, CH3Br, CH3OH, CH4


Recall that there are several types of intermolecular forces (IMF):

1. Ion-ion interaction – occurs between two ions. Strongest IMF

2. Hydrogen bonding – occurs in compounds where hydrogen is directly connected to an electronegative element such as N, O, or F; 2nd strongest IMF

3. Dipole-dipole interaction – occurs between two polar covalent compounds; 3rd strongest IMF

4. Dispersion forces – occurs in all compounds and is the primary IMF exhibited by nonpolar compounds; weakest IMF

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Problem Details

Arrange the following in order of increasing boiling point:    CsF, CH3Br, CH3OH, CH4

A. CH< CH3Br < CH3OH < CsF
B. CH3OH < CH< CH3Br < CsF
C. CsF < CH3Br < CH3OH < CH4
D. CH< CH3OH < CH3Br < CsF
E. CH3OH < CH3Br < CsF < CH4

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