Consider these statements about intermolecular forces. Check all the true statem
ID: 1075570 • Letter: C
Question
Consider these statements about intermolecular forces. Check all the true statements. (Select all that apply.)
1) To form a hydrogen bond, the molecule must contain a H atom bonded to a highly electronegative atom such as a F, O, or N atom.
2) CH3CH2CH3 has stronger London dispersion forces than CH4.
3) All polar molecules form hydrogen bonds.
4) The molecules in SO2(g) exhibit dipole-dipole intermolecular interactions.
5)A substance containing CH4 molecules has greater intermolecular forces than one containing CH3CH2CH2CH3 molecules.
Explanation / Answer
1) TRUE
Hydrogen Bonding: The attraction between a hydrogen atom (that is bonded to an O, N, or F atom) and an O, N, or F atom in a neighboring molecule.
2) TRUE
More surface area in CH3CH2CH3 So therefore strong London dispersion Forces.The smaller the molecule the smaller the London dispersion forces
3) FALSE
The hydrogen bond in polar molecules occurs only in compounds that have hydrogen bonded to N, O, or F. For example HBr is a polar molecule but it does not form Hydrogen bond because electronegativity of Br is less.
4) TRUE
Sulfur dioxide is polar because oxygen is more electronegative than sulfur and their dipole moment is also not equals to zero.
5) FALSE
Molecular mass of CH3CH2CH2CH3 is more therefore surface area is more so it has more intermolecular forces than CH4