Post Lab Questions: Part 1 Critical Thinking Questions: 1. Does a substance that evaporates more quickly (thus giving a greater T ) have a higher or lower force of attraction to other molecules in the liquid compared to a substance that evaporates more slowly (smaller T)? Explain. 2. Rank the compounds in terms of rate of evaporation from fastest to slowest. 3. Which has the strongest IMFs according to this data? 4. Explain your results on the basis of intermolecular forces. Part 2 Critical Thinking Questions: 1. Which of the two series ("C\&H" or "one OH per C") seems to have greater IMFs? How did you reach that conclusion? 2. Within each series, does there seem to be any pattern to the strength of IMFs? If so, what is the pattern? Part 3 Critical Thinking Questions: 1. If the static electric charge is composed of negative electrons, which chemicals should be deflected more, polar or nonpolar ones? Part 4 Critical Thinking Questions: 1. Which should be more viscous, polar or nonpolar molecules Part 5 Critical Thinking Questions: 1. As IMF's increase, should boiling points increase or decrease? Explain. 2. Do the "Total IMF" numbers following the trend of increasing boiling points? Does this calculation seem to be a reliable estimation of IMF's