Answer Happy

3. (1 point) If a compound has a small AT does it have strong or weak surface tension? Does it evaporate quickly or slowly? Circle one: Strong surface tension Weak surface tension Circle one: Evaporates quickly Evaporates slowly 4. (5 points) Let us examine the relationship between the AT measured for a compound and the relative strength of intermolecular forces it experiences: a. Fill in the table for the molecules indicated. Compounds: n-pentane Butyl alcohol Molar masses (g/mol) Functional group/type of organic compound AT values (°C) Label which one experiences stronger IMFs and weaker IMFs compared to each other b. If a compound experiences stronger intermolecular forces than another will it have a larger AT in this experiment or smaller? Circle your answer. Circle one: Larger AT Smaller AT c. Based on the table above, if the two molecules experience different strengths of intermolecular forces is the relationship between their AT and strength of intermolecular forces proportional or inversely proportional? Circle your answer. Circle one: Proportional inversely proportional

5. (5 points) Let us examine the relationship between molar mass of a compound and the relative strength of intermolecular forces they experience: a. If two molecules have the same functional group but one is a larger molecule (i.e. has a larger molar mass) than the other, will it have stronger or weaker intermolecular forces of attractions in a pure sample? Circle your answer. Circle one: stronger IMFs than the larger weaker IMFs than the larger b. Fill in the table for the molecules indicated. Compounds: Ethyl alcohol Propyl alcohol Molar masses (g/mol) Functional group AT values (°C) Label which one experiences stronger IMFs and weaker IMFs compared to each other c. Based on this data, if the two molecules have the same functional group is the relationship between their molar masses and strength of intermolecular forces proportional or inversely proportional? Circle your answer. Circle one: Proportional inversely proportional 6. (3 points) in which two samples do we see the effect of molecular shape on intermolecular forces occur? Why does one have a higher AT than the other? In other words, why doesn't it match your previous question's relationship between molar mass and strength of IMFs? Your explanation will include the AT values, type of intermolecular forces experienced, and a description of the structure of the molecules. Include the pertinent AT values in your answer. (Hint: Build two molecules of each substance and simulate an IMF attraction. What do you notice about the size of their area of interaction for IMFs?)