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Solutions

Solutions. Chemistry Lowell High School. Agenda. FYI Introductions Preamble #1. Monday, January 29, 2007. FYI’s. Lab notebook 1/31 Wednesday Book Check 2/5 Monday Binder Check 2/5 Monday RLog 15 2/6 Tuesday. Monday, January 29, 2007. First Day Stuff.

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Solutions

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  1. Solutions Chemistry Lowell High School

  2. Agenda • FYI • Introductions • Preamble #1 Monday, January 29, 2007

  3. FYI’s • Lab notebook 1/31 Wednesday • Book Check 2/5 Monday • Binder Check 2/5 Monday • RLog 15 2/6 Tuesday Monday, January 29, 2007

  4. First Day Stuff • Website: http://geocities.com/lowellchemistry • Ms. Rotter • Teammates/ Class setup • Reading Logs • Lab notebooks (Thursday) Monday, January 29, 2007

  5. Preamble #1 • You have 4 glasses of water.   In which cup will a teabag dissolve the quickest?  In which cup will an ice cube melt the fastest?  In which cup will a ¼ teaspoon of salt dissolve the quickest?  Rank the cups for each of those situations. 1. 300mL at 25 deg C    2. 300mL at 85 deg C 3. 50mL at 25 deg C      4. 50mL at 85 deg C Monday, January 29, 2007

  6. Concentration • Solute – What is dissolved (smaller) • Solvent – What solute is dissolved in (larger) • Solution – mixture of solute and solvent • Concentration = measure of how much solute is dissolved into the solvent Monday, January 29, 2007

  7. Concentration • Types of Concentrations: • Mass Percent = mass solute/mass solution x 100% • Molarity = mol solute/L solution • Molality = kg solute/L solution • Normality = # equivalents/L solution Monday, January 29, 2007

  8. Agenda • FYI • Concentration • Preamble #2 • Book/ID Handout Tuesday, January 30, 2007

  9. FYI’s • Lab notebook 1/31 Wednesday • Book Check 2/5 Monday • Binder Check 2/5 Monday • RLog 15 2/6 Tuesday Tuesday, January 30, 2007

  10. Concentration • Solute – What is dissolved (smaller) • Solvent – What solute is dissolved in (larger) • Solution – mixture of solute and solvent • Concentration = measure of how much solute is dissolved into the solvent Tuesday, January 30, 2007

  11. Concentration • Types of Concentrations: • Mass Percent = mass solute/mass solution x 100% • Molarity = mol solute/L solution • Molality = kg solute/L solution • Normality = # equivalents/L solution Tuesday, January 30, 2007

  12. Preamble #2 • You have a sugar solution of a certain concentration (call this solution A).  You pour 1/4 of this solution into a beaker, and add an equivalent volume of water (call this solution B) 1) What is the ratio of amount of sugar between A and B?2) What is the ratio of volumes between A and B?3) What is the ratio of concentrations between A and B?4) How much water would you add to A to create the concentration of B? Tuesday, January 30, 2007

  13. Preamble #2 (ctnd) • Now, assume that solution A started with a volume of 155mL and 13g of glucose (C6H12O6) dissolved in it. • Calculate the concentration of solution A and B in the following concentration types: • Mass percent • Molarity • Molality Tuesday, January 30, 2007

  14. Agenda • FYI • Preamble #2 • Preamble #3 • ID Handout • Folders • Salt Solubility Lab Wednesday, January 31, 2007

  15. FYI’s • Lab notebook 1/31 Wednesday • Book Check 2/5 Monday • Binder Check 2/5 Monday • RLog 15 2/6 Tuesday Wednesday, January 31, 2007

  16. Preamble #2 (ctnd) • Now, assume that solution A started with a volume of 155mL and 13g of glucose (C6H12O6) dissolved in it. • Calculate the concentration of solution A and B in the following concentration types: • Mass percent • Molarity • Molality Wednesday, January 31, 2007

  17. Preamble #3 • What are some of your ideas/knowledge about solubility, dissolving, and solutions? What are some of your questions about those topics? • How do you think volume and temperature will relate to the solubility of salt? Wednesday, January 31, 2007

  18. Salt Solubility Lab • Add an entry to your table of contents designating this lab. • If you are reusing your notebook, draw a thick line between semesters to help keep them separate • This lab will be completely in I saw/I thought Wednesday, January 31, 2007

  19. Agenda • FYI • Salt Solubility Lab Friday, February 2, 2007

  20. FYI’s • Lab notebook 1/31 Wednesday • Book Check 2/5 Monday • Binder Check 2/5 Monday • RLog 15 2/6 Tuesday • Salt Solubility Lab 2/7 Wednesday Friday, February 2, 2007

  21. Salt Solubility Lab • Finish up your data collection and start the data analysis • You will need to finish the data analysis by the start of class on Monday • Monday we will share class data and your team will have a chance to discuss the extension questions (will require some outside research) • Lab is due on Wednesday Friday, February 2, 2007

  22. Agenda • FYI • Book Check • Salt Solubility Lab Analysis Monday, February 5, 2007

  23. FYI’s • Book Check 2/5 Monday • Binder Check 2/5 Monday • RLog 15 2/6 Tuesday or 2/7 Wednesday • Salt Solubility Lab 2/8 Thursday Monday, February 5, 2007

  24. Lab Analysis • Construct a whiteboard with your team’s data in a data table and graph • Include your determination of the best fit line/curve for your data • Also make a table of your molarities Monday, February 5, 2007

  25. Agenda • FYI • Binders Back • RLog 15 Due • Dilutions • Preamble 4 Tuesday, February 6, 2007

  26. FYI’s • RLog 15 2/6 Tuesday or 2/7 Wednesday • Salt Solubility Lab 2/8 Thursday • QP 15 (1-49 odd) 2/13 Tuesday • RLog 16 2/20 Tuesday Wednesday, February 7, 2007

  27. Dilution • When you add water to a solution, you dilute it (ALWAYS decreases concentration) • M1V1 = M2V2 • M = concentration • V = volume • Tip: Make sure your volumes are correct (may have to add volumes together for V2) Wednesday, February 7, 2007

  28. Preamble 4 • You need to make 535 mL of a sugar solution with a concentration of 2.324 x 10 -3 M.  However, you have solutions of various concentrations and volumes to start with.  How much of each solution and water will you need to combine together? A) 1.1 L of 1M solution B) 300. mL of 2.2 x 10 -2 M solution C) 50. mL of 3M solution D) 66 mL of 1.32 x 10 -1 M solution Wednesday, February 7, 2007

  29. Agenda • FYI • Preamble 4 • Peer Review of Lab • Preamble 5 Thursday, February 8, 2007

  30. FYI’s • Salt Solubility Lab 2/8 Thursday • QP 15 (1-49 odd) 2/13 Tuesday • RLog 16 2/20 Tuesday Thursday, February 8, 2007

  31. Peer Review • On the next available page, write the name of the lab + Peer Review at the top • Space out the headings on the page • Procedure – clear, step by step • Data collection – clear, all necessary data given • Data Analysis – data table, graph, equation of line, molarities • Group Analysis – data table/graph comparison between sides • Extensions – 3 questions, check process • Conclusion – 3 paragraphs Thursday, February 8, 2007

  32. Agenda • FYI • Preamble 5 • Preamble 6 Friday, February 9, 2007

  33. FYI’s • Salt Solubility Lab 2/12 Monday • QP 15 (1-49 odd) 2/13 Tuesday • Each person needs to bring a sample of juice (at least a cup) on 2/13 Tuesday • RLog 16 2/20 Tuesday Friday, February 9, 2007

  34. Preamble 5 • You mix 92g of a 23% by mass solution of Lead (II) nitrate with 1.10L of a 2.00M solution of Potassium chloride.  Your volume increases to 1.13L and a precipitate forms.  • What is the balanced equation? • What is the net ionic equation? • What are the starting moles of the reactants? • What is the limiting reagent? • How much product will you make? • What is the concentration of the remaining ions in the solution? Thursday, February 8, 2007

  35. Preamble 6 • How would you make 1L of a 1.00 mg/mL solution of Vitamin C (Ascorbic Acid = C6H8O6)? • Given the above solution, how would you make 100mL samples of the following concentrations: • 0.8 mg/mL • 0.7 mg/mL • 0.6 mg/mL • 0.5 mg/mL • 0.4 mg/mL • 0.3 mg/mL • 0.2 mg/mL • 0.1 mg/mL Friday, February 9, 2007

  36. Agenda • FYI • Preamble 6 • Sailin’ the High C’s Monday, February 12, 2007

  37. FYI’s • Salt Solubility Lab 2/12 Monday • QP 15 (1-49 odd) 2/13 Tuesday • Each person needs to bring a sample of juice (at least a cup) on 2/13 Tuesday • RLog 16 2/20 Tuesday Monday, February 12, 2007

  38. Preamble 6 • How would you make 1L of a 1.00 mg/mL solution of Vitamin C (Ascorbic Acid = C6H8O6)? • Given the above solution, how would you make 100mL samples of the following concentrations: • 0.8 mg/mL • 0.7 mg/mL • 0.6 mg/mL • 0.5 mg/mL • 0.4 mg/mL • 0.3 mg/mL • 0.2 mg/mL • 0.1 mg/mL Monday, February 12, 2007

  39. Sailin’ the High C’s • Make a new entry in your table of contents for the lab • In your notebook, write out your I saw/I thought for your background and procedure Monday, February 12, 2007

  40. Agenda • FYI • Sailin’ the High C’s Thursday, February 15, 2007

  41. FYI’s • Sailin the High C’s TODAY • RLog 16 2/20 Tuesday • QP 16 (1-49 odd) 3/2 Friday • Garden Project 3/5 Monday (look online) • RLog 10/14 3/12 Monday Thursday, February 15, 2007

  42. Sailin’ the High C’s • Finish up your Questions/Analysis in I saw I thought • Finish your Conclusion in paragraph form Monday, February 12, 2007

  43. Agenda • FYI • Preamble 7 Friday, February 16, 2007

  44. FYI’s • RLog 16 2/20 Tuesday • Quiz 2/23 Friday • QP 16 (1-49 odd) 3/2 Friday • Garden Project 3/5 Monday (look online) • RLog 10/14 3/12 Monday Friday, February 16, 2007

  45. Preamble 7 • 10.0g of Silver nitrate is added to 55mL of a 1.1 x 10-2 M solution of sodium chloride.  A product forms and volume increases to 62mL. A) write the balanced equation B) calculate the moles of reactants  C) find the limiting reagent D) find the mass of product formed  E) find the concentration of the remaining ions Friday, February 16, 2007

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