the difference of physical properties (boiling point, freezing point) based on differences in intermolecular forces (van der Waals forces, London forces, and hydrogen bonding)

1. Chemistry

2. Water ? Boiling point

3. have the same boiling point?? X Y

4. the difference of physical properties (boiling point, freezing point) based on differences in intermolecular forces (van der Waals forces, London forces, and hydrogen bonding).

5. There are three intermolecular forces Let’ssee

6. Quizz Which of the following has the lowest boiling point?O2 F2 Cl2 Fill the blank below.Boiling point and freezing point of polar molecules are ….. than non polar molecules. Higher Lower Which of the following has the highest boiling point?HI CH4 H2O

7. For non polar molecules, only intermolecular force of attraction is London force London force stronger for larger molecules, weaker for smaller molecules Which of the following has the lowest boiling point? O2 F2 Cl2

8. Which of the following has the lowest boiling point? O2 F2 Cl2 Atomic size decreases across a row (left to right). F is smaller than O. F2 is smaller than O2 Atomic size increases going down a column. F is smaller than Cl. F2 smaller than Cl2

9. relative molecular mass >> london force >> Boiling point and freezing point increase >> Butane Pentane

10. For polarmolecules, not only intermolecular force of attraction is London force. There is dipole-dipole force. intermolecular force in polarmolecules is stronger than intermolecular force in non polar molecules. Boiling point and freezing point of polarmolecules is higher than non polar molecules.

11. Freezing point Boiling point relative molecular mass

12. Hydrogen bonding is much stronger than the van der Waals force. Energy to break the hydrogen bond is about 15-40 kJ / mol while for the van der Waals force of about 2-20 kJ / mol. That is why the substances that have a hydrogen bond has a higher freezing point, and boiling point

13. Higher boiling point is due to stronger intermolecular forces. Lower boiling point is due to weaker intermolecular force. Hydrogen bonding Dipole-dipole force London force A B C 1st 2nd 3rd Which one that have highest boiling point?

14. Hydrogen bonding Dipole-dipole force London force H2O HI CH4 1st 2nd 3rd