Monday, June 15, 2009

Finals Study Guide

Download the Complete Study Guide HERE: study guide



You can find selected answers HERE: study guide answers

Friday, June 12, 2009

Heating Curves and Phase Diagrams

Please visit the following website and scroll down until you get to 11.6: Heating Curves.

Click on the link and go through the tutorial with your partner.

http://www.wwnorton.com/college/chemistry/gilbert/index/site_map.htm#tutorials


And after our demo on Carbon Dioxide, click on this link again and go down to 9.7: Phase Diagrams.

Wednesday, June 10, 2009

Heating Curve for Water

Look below for the sample chart of data from today's lab:

GREAT JOB GROUP 1 PERIOD 6!!




Use this graph to help you complete your HW.

Here is a copy of some raw data:

Monday, June 8, 2009

pH and Titrations Review Problems

4a.) The hydronium concentration is greater than the hydroxide concentration.

6.) a. neutral
b. basic
c. neutral
d. acidic
e. neutral
f. acidic
g. basic

8.) a. hydronium conc = 3.0 x 10-2 M, hydroxide conc = 3.3 x 10-13 M
c. hydronium conc = 5.0 x 10-3 M, hydroxide conc = 2.0 x 10-12 M

9.) a. 2.00
b. 3.00
c. 5.00
d. 4.00

11.) a. 12.00
b. 11.00
c. 10.00

13.) a. 1 x 10-3 M
b. 1 x 10-7 M
c. 1 x 10-11 M
d. 1 x 10-5 M

15.)a. 5.9 x 10-5 M
b. 2.2 x 10-8 M
c. 3.3 x 10-10 M

16.) a. 2.0 x 10-3 M
b. 5.0 x 10-12 M
c. 1.1 x 10-2 mol HNO3
d. 0.69 g HNO3
e. PLEASE IGNORE!

20.) a. The end point is reached when the unknown solution has been completely neutralized. This happens when the two substances (acid and base) are present in chemically equivalent amounts.
b. The indicator is present to change colors when the end point is reached.

24. a. 1.0 mol NaOH
b. 0.75 mol HNO3
c. 0.10 mol Ba(OH)2
d. 0.90 mol H2SO4

25.) 7.50 x 10-2 M KOH

26.) 3.02 x 10-2 M HNO3