IMF Pre-Lab Su14: Hi I would like these questions answered to double...
Pre-Lab Exercise
Intermolecular Forces
40.0 cm

Solvent Front

30.0 cm
20.0 cm
10.0 cm

Point of Application

0.0 cm

F- Cl- Br- I- Unk
Halides in 80% acetone
1.Determine the Rf value for the Cl- ion in 80% acetone.

2.Which halide ions are present in the unknown?

3.Determine the molar mass for each of the alkanes (pentane, hexane, heptane, octane).

4.List the intermolecular forces present in ethanol, acetone and ethyl acetate.

5.A student studies the effect of intermolecular forces on vapor pressure by immersing a
filter paper covered temperature probe in a test tube containing hexane. The initial
temperature is 24.0°C and the temperature after 45 seconds is 8.4°C. Calculate the rate
of evaporation.