2C - Polarity - VDW or Permanent Dip - Dip IMF |
1) Draw the shapes of the following molecules showing any polar covalent bonds.
Show any dipoles on the diagrams: [6]
a) H2 b) Cl2 c) HCl d) H2O e) NH3 f) CCl4
2) For the molecules in (1), state whether the molecule is 'polar' or 'non - polar'. [6]
3) Draw dot and cross diagrams for the following pairs of molecules: [4]
a) BF3 and PF3
b) CO2 and SO2
c) For each of the above pairs, predict and sketch the shapes and show any dipoles. [2]
d) Explain the polarities of each pair. [4]
4) Using your answers above, determine which intermolecular forces exist between the following molecules.
Van der Waals or Permanent dipole - dipole interactions: [10]
a) H2 b) Cl2 c) HCl d) H2O e) NH3
f) CCl4 g) BF3 h) PF3 i) CO2 j) SO2
5) What is the pattern between Qu2,3 and Q4. [2]