Editing 2022-2023 Chem328 Review HW For Polarity, IMF And Physical Properties Including Solutions, Molarity
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<br> Name: ________________________________ Period: _________________<br> <br> 1. Print out a copy of [http://www.tmcleod.org/Level1/Chem328IMF/201617Chem328BondPolarityWorksheet.docx Bond Polarity Worksheet] and fill in the appropriate information in each box for (can use piece of paper if dont have table)) a) Ca-Cl, b) C-O, c) S-C, d) H-Cl, e) K-O, f) O-H<br> <br> <br> 2. Print out a copy of [http://www.tmcleod.org/Level1/0708MolecularPolarityWorksheet.doc Worksheet for Molecular Polarity] and complete the table for the following: a) CCl<sub>4</sub> b) <nowiki>PCl</nowiki><sub>5</sub> c)CS<sub>2</sub> d) NF<sub>3</sub><br> <br> <br> 4. Write the symbol for a polar bond, _____________ and write down how you have memorized the direction of the symbol <br> <br> ______________________________________________________________________________<br> <br> 5. What are the cut-offs of <nowiki>deltaEN</nowiki> for ionic bonds ______________,<br> <br> polar bond ______________, non-polar bond _____________<br> <br> <br> 6. List the species (e.g. ionic, metallic, polar, etc) from highest IMF to lowest IMF<br> ____________________________________________<br> <br> <br> 7. What are the two IMF names for polar molecules interacting with each other? _____________ and ________________<br> <br> 8) London Dispersions force (caused by uneven distribution of electrons for very short period of time, called Instantaneous dipole) exist for all species? Yes or No?<br> <br> <br> 9) Can an ionic compound (i.e. a set of ions) be polar or non-polar? Explain why or why not.<br> <br> <br> 10) Pyramidal geometry is symmetrical, True or False (Circle one).<br> <br> <br> 11) Which one of the following has the highest IMF and why (explain in space below), H<sub>2</sub>O or CH<sub>3</sub>CH<sub>2</sub>OH. If you had a mixture of both, which would boil first, why?<br> <br> <br> <br> 12) Crude oil is a mixtures of compounds. Two of these compounds are hexane (C<sub>6</sub>H<sub>14</sub>) and octane (C<sub>8</sub>H<sub>18</sub>). What is the physical process called that separates these two liquid (look up in Internet)? What property is this physical process based on? Both of these substance have _________________ IMF. Which one has the higher IMF and why? Which one boils first (i.e. lower Boiling point)? <br> <br> <br> <br> 13)In replace of completing Molarity calculations (we will use the following), if you have 1.0 mole of Ca<sub>1</sub>Cl<sub>2</sub>:<br> a)How many moles of chloride ion (Cl<sup>1-</sup>) do you have ?<br> b)How many moles of calcium ions (Ca<sup>2+</sup>) do you have? <br> c) How many total ions (both cations and anions) do you have? Briefly explain why.<br> <br> <br> d) On the back of this paper or another sheet of paper, draw a picture/diagram of what a solution of the above calcium chloride solution looks like in a particle view fashion/manner. Hint:: 13a-c should help. Please also include correct orientation of water molecules as needed in the diagram.<br> Provide an explanation of what happened if the calcium chloride started out as a solid ionic compound (don't have to draw solid ionic cpd). <br> Note (for your written discussion):<br> i)Please use hydrated ions and/or hydrated molecules where needed<br> ii) Please use partially negative and partially positive "ends" of molecules where needed<br> <br> <br> 14) Again, in replace of completing Molarity calculations:<br> a)If I have 1.0mole of C<sub>1</sub>O<sub>1</sub> (Carbon monoxide), how mole of the base unit (use correct name) of this substance do you have? (Please show chemical formula/symbol(s) charge for the base unit.<br> <br> b) On the back of this paper or another sheet of paper, draw a picture/diagram of what a solution of the carbon monoxide solution looks like in a particle view fashion/manner. Hint:: 14a should help. Please also include correct orientation of water molecules as needed in the diagram.<br> Provide an explanation of why this gas would be in the water solvent anyway. <br> Note (for your written discussion):<br> i)Please use hydrated ions and/or hydrated molecules where needed<br> ii) Please use partially negative and partially positive "ends" of molecules where needed<br><br> <br> <br> 15) On the back of this page, explain what happens when you add vegetable oil (just use an oval instead of chemical formula in drawing) and water try to mix. Do a similar explanation as in Q13/14.<br> <br> <br> 16a) What do you call a solution that you can add more solute to? Unsaturated, saturated or saturation solution with solute in top/bottom<br> <br> 16b) What do you call a solution that you have as much solute as possible? Unsaturated, saturated or saturation solution with solute in top/bottom<br> <br> 16c) If you have a saturated solution, what happens when you add more solute? <br> <br> 17a) If you increased temperature of a solution, what happens?<br> <br> 17b) How does it affect the solution in Q13?<br> <br> 17c) How does it affect the solution in Q14?<br> <br>
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