Category Archives: Chemistry 12

Titrations

  1.  I will be able to determine the molarity of an acid or base.  I will be able to determine the percent purity of an acid or base.
  2. Do:  Read section 4.16 and do #95, 97, and 99.  If you are ambitious, you can do the questions on Worksheet 4B.  Acid 4B worksheet
  3. Do:  Prelab for Lab 20C.  See copy here:  Lab 20C.  See video of how to do a titration here:

Incomplete neutralization and pH

  1.  Hand back pH worksheet.  Any Q’s?
  2. Go over Lab 20B analysis and do a practice lab quiz.
  3. I will be able to calculate the pH after an acid-base neutralization reaction, even when they don’t fully neutralize the solution.
  4. Do:  Read section 4.12 and do #60 and 62 on p.143.
  5. Quest focused on sections 4.7- 4.11 next class.  There will be about 15 multiple choice questions and the written section will be a quiz based on analyzing strenthgs of acids like in Lab 20B.

Lab 20B Analysis

  1.  Warm up!  MC questions from June 2003 provincial exam.
  2. Lab 20B analysis:  Compare the strengths of the acids and rank the acids from strongest to weakest.  We will discuss your results next class.
  3. Continue to do practice questions from your workbook up to section 11.
  4. Reminder:  next Quest focusing on sections 4.6 to 4.11 on Wed. March 11.

 

Lab 20B – Strengths of Acids and Bases

 

  1. Warm Up!
  2. Go over pH worksheets (2 of them) and hand in.
  3. Do:  Lab 20B – Strengths of Acids and Bases.  How can you tell which acid is stronger based on the color the solution changes?
  4. Quiz on sections 7-11, focusing on pH and pOH calculations and strengths of acids and bases (Lab 20B) on Wed. March 11

Kw, Ionization of Water

  1.  What did you cover last class?  We continued on with the study guide.  See block 1 notes here:  Acids and Bases Study Guide Part 1 Block 1 notes Feb21
  2. Do:  Worksheet “Self Test” #2-10 odd letters only.  We marked as many questions as we could at the end of class.
  3. Quiz next class will be only on sections 1-6 since we did not have enough time to cover up to section 11 fully.  There will be about 15 mc questions.  This should only take 15-20 minutes.  We will do more practice/review of sections 7-11 and learn about pH and pOH.

Strengths of Acids and Bases

  1.  Since I was away today, the TOC should have covered the sections on the Strengths of Acids and Bases and may have introduced how to calculate the pH of a solution.
  2. You filled in your study guide.
  3. You should read your workbook up to section 4.11 and try some of the practice queestions from each section.
  4. If you have questions, bring them on Friday!
  5. Acids and Bases Test #1 – scheduled for Tues. Feb.25
  6. Deadline for Term2 assessments – Thurs. Feb.27 – any assessments you want to count for term 2 must be completed by then.

Bronsted-Lowry Acids and Bases

  1.  Go over Lab 20A- can you identify which are acids and which are bases?  What is Arrhenius’ definition of an acid and a base?  Why does this not work for NH3?
  2. I will be able to identify Bronsted-Lowry acids and bases.
  3. Go over worksheet “Acids and Bases” and fill in the study guide worksheet pages.  See copies of the worksheet on last day’s blog.
  4. Do:  Read section 4.1 to 4.5 and do practice questions from each section.
  5. Heads up!  First section test for section 4.1 to 4.11 projected to be on Feb.25.  It will be multiple choice.
  6. Heads up!  Any assessments for Term 2 must be completed by Feb.28 in order to be included in your term 2 mark.