University:
Boston University
Course:
CAS CH 101 | General Chemistry 1
Academic year:

2021
Views:

56

Pages:

3
Author:

dekagons216

TP The correct order of boiling point of HBr, HCl and HI is lowest to highest … 17% 17% 17% 17% 17% 17% 1. 2. 3. 4. 5. 6. HBr HCl HBr HI HCl HBr HCl HI HI HCl HI HBr HI HCl HI HBr HBr HCl • Dispersion interaction • Relative boiling points Permanent dipoles Dipole‐dipole versus dispersion Sketch a second molecule arranged so that it … attracts maximally repels maximally neither attracts nor repels 1 Dipole can be attractive or repulsive Dispersion forces are due to induced dipoles Induced dipoles Dispersion always attractive Sketch the induced dipole in each case: 2 Relative boiling points Putting it all together: Relative boiling points Boiling means particles overcome attraction to their neighbors and depart the liquid. Relative boiling points reflect relative strength of intermolecular forces … Dispersion Dipole‐dipole interaction Hydrogen bonding Relative boiling points (fig 6.20, p 172) Why is SnH4 SbH3 Why is SnH4 < SbH3 < TeH2? TeH2? Why is CH4 SiH4 GeH4 Why is HCl HBr HI? Why is NH3 PH3 AsH3 Why is OH2 FH SnH4? SbH3? NH3? 3