Chem 1151 Assignment for the Week of February 25, 2008

Lecture

• Zumdahl/Zumdahl Chapter 4: Aqueous Solutions
  • Chemical Reaction Types (4)
    • Precipitation (5-7)
    • Acid-Base (8)
    • Oxidation-Reduction (9-10)
  • Study Problems: Chapter 4: 9-10, 14-15, 17, 21, 23, 29, 35, 37, 39, 47, 49, 55, 59, 63, 67, 69, 71, 73, 75

Laboratory

• Expt 5: Standardization and Acid-Base Titrations
• Lab Notebooks will be reviewed during the week of February 25. Each TA will decide how s/he wants to do this and give you specific directions.
• No notebook grade will be assigned at this time, but will be graded at the end of the semester.

Discussion

• Questions about Chapter 4
• Qeustions about Exam 1; Solutions are posted on the web.
• Quiz on Chapter 4 - focus will be on electrolytes, molarity, acid and base strength, neutralization, stoichiometry. You may want to look at Probl 4.49 to see how several concepts we have studied can be integrated into one problem. (What are those concepts?)

Exam 1

• Exam 1 will be passed out in Discussion on February 26
• Requests for regrading any questions are due March 4 to Dr. Tsai.
• Here are the TENTATIVE LETTER GRADE CUTOFFS (These are used in egradebook)

• letter grade	% grade
  A	> 90%
  A-	85-89
  B+	81-84
  B	77-80
  B-	73-76
  C+	69-72
  C	65-68
  C-	61-64
  D+	58-60
  D	55-57
  F	< 55

Extra Credit points offered in class are posted on egradebook. Extra Credit points on quizzes or exams are added to the quiz or exam score.