pH

5/14/2010

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Read p.382-388.  Homework:  p.389 #6-8; p.393 #7-9
 
We discussed the properties of acids and bases, and the Arrhenius theory of acids and bases, and strong and weak acids and bases.  The text reference is p.370-375 and p.381-383.  The unit test will be next Friday, May 21, 2010.
Homework: p.379-380 #1, 2, 7, 8; p.393 #1-3, 5
Review for test:  p.410-413 #1-8, 12-15,17, 20, 23;  p.325-7 #1-5, 10, 18, 19;  p.365 #5, 20;  p.389 #9;  p.405 #3, 7, 15, 18
 
If you were not present in class, then read p.348-351 for examples of the problems we solved.
Homework:  p.352 #8, 10
 
If you did not finish the experiment yesterday, come at lunch on Wednesday to complete it. 
For this class, there was a choice of what level to work at: on the Unit 4 page of this site, download the "soln stoich lesson" file, and if you struggled to understand stoichiometry then print out page 3; if you were OK with stoichiometry print page 1; if you want a challenge, print page 2.  Go through the handout and use your text for reference as stated on the handout.  Homework is also on the handout.
 
We performed the experiment and began work on the discussion questions.  The laboratory report is due on Wed., May 12.  If you did not complete it, see your teacher about finishing at lunch time.
 
We discussed how to solve problems using the solubility table on p.334. 
Homework:  Complete the "prediction" of the "Solutions Logic Puzzle Experiment" for class Monday so that you are able to complete the lab.  The instructions are found on the Unit 4 page of this site as "logic puz lab".
 
The handouts for this lesson are found on the unit 4 page of this site.  They are called "Dissolving Lesson" and Net Ionic Eqn Lesson".  Text reference is p.334, 337-342.
Homework:  p.336 #3, 6; read p.340-342; answer p.343 #6ac; p.347 #2, 3
 
We had a quiz on terminology and concentration calculations.  We made a variety of solutions for use in our experiments. 
Homework:  Answer the question on the handout "Let's Take the Fun Out of Rum and Coke" (also found on the unit 4 page of this site) to hand in tomorrow; Read p.330-331 and answer p.336 #1, 2
 
Quiz tomorrow on terminology and concentration calculations.  We learned how to use volumetric flasks and to calculate properties of concentrated and dilute solutions.
Text reference is p.319-321.
Homework:  p.321 #25, 26; p.325-7 #11, 13-15, 21, 34
 
Find concentration in g/100 mL by dividing mass by volume and multiplying by 100.  For molar concentration, the text reference is p.313-315.
Homework:  What is the molar concentration of a 30.6 g/100 mL solution of potassium sulfate?
text p.316 #19cd, 20de, 22, 23