Helen asked in Science & MathematicsChemistry · 10 months ago

Which of the following molecules would allow for dipole-dipole interactions, but not hydrogen bonding?

Sr(C2H3O2)2 

CH3COF

CH3COOH

H2O2

C2H6

2 Answers

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  • 10 months ago

    Intermolecular attractions....

    Hydrogen bonding occurs when H is bonded to N, O, or F in one molecule and is weakly, covalently bonded to N, O, or F in an adjacent molecule.

    Dipole-dipole forces (called Keesom forces) occur between molecules with a permanent dipole (a non-zero dipole moment.)  Such molecules are "polar."

    Sr(C2H3O2)2 ionizes to make Sr^2+ and C2H3O2^-.  The acetate ion is polar, but it can only function as a hydrogen bond acceptor.  Strontium acetate is not a molecular compound.

    CH3COF is polar, but can only function as a hydrogen bond acceptor. It exhibits Keesom forces, Debye forces and London dispersion forces.

    CH3COOH is polar and exhibits hydrogen bonding (as well as Keesom forces, Debye forces and London dispersion forces).

    H2O2 is polar and exhibits hydrogen bonding (as well as Keesom forces, Debye forces and London dispersion forces).

    C2H6 is nonpolar and only exhibits London dispersion forces.

    Final answer: CH3COF

    CH3COF is polar, exhibits Keesom forces (dipole-dipole attraction), but not hydrogen bonding.  It can be a hydrogen bond acceptor.  It also exhibits Debye forces and London dispersion forces.

  • Anonymous
    10 months ago

    Molecule CH3COOH.

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