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- 1. Multiple ChoiceWhat explains the very high melting and boiling point of waterStrong dipole-dipole bonds between water moleculesStrong hydrogen bonds between water moleculesDispersion forces which are present in all moleculesAsymmetrical shape of the polar bonds.
- 2. Multiple ChoiceDoes HCl have hydrogen bonding?yesno
- 3. Multiple ChoiceDoes CH4 have hydrogen bonding?yesno
- 4. Multiple ChoiceAll molecules have London forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present we can ignore London forces. Which of these has ONLY London forces?I2NH3OCl2SH2
- 5. Multiple Choice
Which substance would have the weakest intermolecular forces of attraction?
CH4
NaCl
H2O
MgF2
- 6. Multiple Choice
Intermolecular forces for: NH3
Dispersion Force
Dipole dipole
Hydrogen bonding
- 7. Multiple ChoiceIonic Bonding involves...The transfer of protonsThe transfer of nuetronsThe transfer of electronsNone Of the above
- 8. Multiple Choice
Which substance has the weakest intermolecular forces?
Substance A, boiling point of 75 °C
Substance B, boiling point of 105 °C
Substance C, boiling point of 25 °C
Substance d, boiling point of 45 °C
- 9. Multiple Choice
The weaker the intermolecular forces of a substance the _____________ the boiling point
higher
lower
- 10. Multiple Choice
Intermolecular forces for: CO2
Dispersion Force
Dipole dipole
Hydrogen bonding
- 11. Multiple ChoiceLondon forces are stronger in heavier atoms or molecules, and weaker in lighter atoms or molecules. Which of these has the strongest London forces?F2Br2I2Cl2
- 12. Multiple ChoiceRank these in order of strength:
covalent bond
London forces
hydrogen bond
dipole-dipole attractiondipole-dipole>covalent bond>hydrogen bond>LondonLondon>dipole-diple>hydrogen bond>covalent bondcovalent bond>hydrogen bond>dipole-dipole>Londonhydrogen bond>dipole-dipole>London>covalent bond - 13. Multiple ChoiceWhat type of forces will the following molecule have?dispersion forcesdipoleshydrogen bonding
- 14. Multiple ChoiceHow will the following molecule bond with itself?DispersionDipoleHydrogen bond
- 15. Multiple ChoiceAs pressure decreases, boiling point___decreasesincreasesdecreases then increasesincreases then decreases
- 16. Multiple ChoiceLiquids with weak intermolecular forcescontain a lot of kinetic energyeasily evaporatecannot diffusefreeze easily
- 17. Multiple Choicewater have a low vapor pressure becauseit has strong london dispersion forces acting between its moleculesit has strong hydrogen bonds acting between its moleculesit has a weaker force of attraction between its moleculesit is very volatile
- 18. Multiple Choice
According to the reference table, what is the boiling point of ethanoic acid at 80 kPa?
28 oC
100oC
111oC
125oC
- 19. Multiple Choice
Which liquid has the highest vapor pressure at 75oC?
ethanoic acid
ethanol
propanone
water
- 20. Multiple Choice
At which temperature is the vapor pressure of ethanol equal to the vapor pressure of propanone at 35oC?
35oC
60oC
82oC
95oC
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