LARN 161 C41D1

LARN 161 C41D1

Study for the summative assessment on chapter 19 on Acids, Bases, and Salts that is to be given on your next school day that our class meets.  Today is day 162.  Study for your test which is scheduled for school day 163!  If your class does not meet on day 163, today’s home learning activities are listed under day 163 and on day 163 your home learning activities are those listed below.

Start the following in class:

1.   Go to http://www.phschool.com/webcodes10/index.cfm?wcprefix=cda&wcsuffix=1190&area=view and take an online formative test for chapter 19, Acids and Bases.  Then click on the Score My Test button and study anything that you do not yet understand.

2.a.  Review and study your notes, and your journal reflections. Study your learning log, your Cornell Notes, and anything that was misunderstood on the Chapter 19 Study Guides, Chapter 19 Section Reviews, chapter 19 Test A on Solutions, and other work sheets which you now have checked using green ink.  Look up anything that you still don’t understand in your text, glossary, vocabulary study sheets, class notes, or come to help class if you need help.

2.b.  Examine this chapter’s learning objectives, one by one. 

• Are you able to demonstrate your understanding or mastery of each of this chapter’s learning objectives?  
• How do you know you can? 
• What has formative assessment of each objective informed you about?

2.c. Continue studying for the chapter 19 summative assessment on Solutions.  Understand about and be able to do the following.

1)  Define and identify Arrhenius acids and bases, Brønsted-Lowry conjugate acid-base pairs, and Lewis acids, bases, and adducts.

        2)  State the names and formulas of the seven (7) common strong acids.

                        [nitric acid, HNO_3(aq); sulfuric acid, H₂SO_4(aq); perchloric acid, HClO_4(aq); chloric acid, HClO_3(aq); hydrochloric acid, HCl_(aq); hydrobromic acid, HBr_(aq); hydroiodic acid, HI_(aq)]

3)  Construct the expression used to determine the value of an ion product constant for water.

4)  Solve problems involving the water constant, K_w = [H⁺][OH^–] = 1.00 x 10-14 at 25.0° C.

5)  Describe the origin of the pH scale and its temperature dependence.

6) Describe the relationship between pH and pOH,  pH + pOH = 14.

7)  Interconvert values for the [H⁺], pH, [OH^–], and pOH of aqueous solutions at 25.0 °C, given a value for one of the four quantities.

        8)  Describe how to construct the expression used to determine the value of an acid dissociation constant.

9)   Solve problems involving the an acid dissociation constant, K_a = [H⁺][X^–][HX]^-1

10)  Describe how to construct the expression used to determine the value of an base dissociation constant.

11)  Solve problems involving the a base dissociation constant, K_b = [conjugate acid][OH^–][base]^-1.                12)  Write equations for Arrhenius and Lewis acid-base neutralization reactions.

13)  Find the concentration or volume of an acid or base, given data concerning a titration.

14)  Describe how the selection of an acid-base indicator for a titration depends on the pH of the solution produced when equivalent amounts of acid and base have neutralized each other.

15)  Describe the titration relationship, c_Macid · V_acid = c_Mbase · V_base  · (equation mole ratio).

16) Describe how to make a buffer solution.

17) Write equations that show how the two chemical species present in a buffer can neutralize small additions of acids and bases.

18) Review Table 19.1 on page 588, Table 19.2 on page 589, Figure 19.5 on page 591, Table 19.3 on page 591, Figure 19.6 on page 592, Table 19.4 on page 592, problem I19-1 on page 593, Figure 19-7 on page 594, Table 19.5 on page 598, Figure 19.10 on page 598, Figure 19.12 on page 602, Table 19.6 on page 605, Figure 19.16 on page 606, Table 19.7 on page 607, Table 19.8 on page 609, Figure 19.20 on page 613, Figure 19.23 on page 615, Figure 19.24 on page 618, Figure 19.28 on page 621, and Table 19.10 on page 621.and

19) Correctly do and show your work for each type of chapter 19 problem presented in the text, the worksheets, and gone over in class.

Recommended for those who have time left in their 45 minute study period, but not required of all:

1. Continue to review the meanings of the words on the chapter 1, chapter 2, chapter 3, chapter 4, chapter 5, chapter 7, chapter 8, chapter 9, chapter 10, chapter 11, chapter 12, chapter 13, chapter 14, chapter 15, chapter 16, chapter 17, chapter 18, and chapter 19 vocabulary lists.  Place a – symbol in front of each word that you have to study more, and a change the- to a + symbol in front when you have demonstrated mastery over the word to a study buddy, parent, or friend.
2. Read and study the Study Guides given on pages 33, 57, 95, 121, 148, 180, 206, 246, 280, 314, 346, 378, 406, 438, 464, 498, 534, 580, and 624 of the text.  Review the Key Concepts for each text section and clarify in your mind under what circumstances would it be helpful to use each of the different relationships shown in the Key Equations section.