Editing revision 3 of Answers To 2021 Questions For IMF And Physical Properties
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Here are the answers to the [[2021 Questions for IMF and Physical Properties]].<br> <br> <br> 1) London Dispersion Forces (LDS) - Note: every substance including atoms exert LDS but most also exert other IMF that are so strong that LDS contribution is insignificant.<br> <br> 2) Miscible (or immiscible)<br> <br> 3) Vapor <br> <br> 4) Dipole-Dipole (DD) and Hydrogen Bonding (HB)<br> <br> 5) Gas phase<br> <br> 6) Like dissolve likes. Polar/ionic substance will dissolve polar/ionic substance. Non-polar molecules can only dissolve non-polar molecules.<br> <br> 7) Carbon monoxide is a polar molecule and methane is a non-polar molecules so they will not dissolve in each other.<br> <br> 8) No, Basic particles of the solute go in the empty space between the base particle of the solvent particle until there is no more empty space.<br> <br> 9) Base partoccupy empty space between base particle of the solvent. <br> <br> 10) No, the IMF of the substance is the same. What is different is the amount of energy the particles have to "push against" the IMF.<br> <br> 11) Metal/ionic, polar molecule, non-polar molecule.<br> <br> 12) Octane (C<sub>8</sub>H<sub>18</sub>) has higher IMF since it has more electron thereby having more Instantaneous dipoles. Since octane has a higher IMF, it will require more energy for particles to overcome their IMF and go in gas phase (called boiling). So, hexane will "boil first".<br> <br> 13) For your knowledge, NH<sub>3</sub> will have a higher IMF since it has 3 hydrogen bonds per molecule. (In reality, it is H<sub>2</sub>O even though it only has two hydrogen bonds, H - O polar bond exert more IMF than H - N). <br> 14) Yes (note: for most substance there are other IMF that are stronger so LDS do not play a major role. Of course, major exception is non-polar molecules).<br>
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