PHASE CHANGES AND INTERMOLECULAR FORCES HOMEWORK ASSIGNMENT Part 1: Based upon your notes and data from part 1, answer t

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Phase Changes And Intermolecular Forces Homework Assignment Part 1 Based Upon Your Notes And Data From Part 1 Answer T 1 (33.23 KiB) Viewed 31 times

PHASE CHANGES AND INTERMOLECULAR FORCES HOMEWORK ASSIGNMENT Part 1: Based upon your notes and data from part 1, answer the following questions. Show all work as necessary. 1. In the space below, organize your samples from smallest AT to largest AT for your alkanes, and again for your alcohols: Alkanes: Alcohols: 2. What does the AT "tell" you about how readily a sample evaporates? 3. What intermolecular force(s) are present in the alkanes (list all present)? 4. What intermolecular force(s) are present in the alcohols (list all present)? 5. Two of the liquids, pentane and 1-butanol, had nearly the same molecular weights, but significantly different AT values. Explain the observed difference in AT values for these substances. 6. Which of the 6 substances you observed do you think would have the highest boiling point? Which would have the lowest? Explain your reasoning. 7. Using Excel (or another spreadsheet program), plot a graph of AT values of the four alcohols versus their respective molecular weights. Plot molecular weight on the x- axis and AT on the y-axis. Label each point with the identity of the alcohol and attach the graph. Can you draw any conclusions regarding intermolecular forces and molecular weight from this graph?