Quiz 2 material (13.3, 13.5-13.6)

[robert zellmer]

Quiz 2 will cover:  Sections 13.3, 13.5-13.6


*Section 13.3:*

Factors affecting solubility - Att. forces ("like dissolves like"), pressure
and temp. affects. You're considering temp. effects and "like dissolves 
like"
concepts in exp 15.

I have summary on line about attractive forces and solubility. See the link
"Ch. 11 & 13 - Review of IAF, Solids and Solubility" in the "notes" 
section of
the course web page.

http://chemistry.osu.edu/~rzellmer/chem1220/notes/ch11_12_13_rev.htm 
<http://chemistry.osu.edu/%7Erzellmer/chem1220/notes/ch11_12_13_rev.htm>


*Sections 13.5-13.6:**
*
Make sure you can do colligative property calculations, including
for ionic substances or ionizing molecular substances (things that
dissociate or ionize to give multiple particles, NaCl, HCl, etc.).
Know what the van't Hoff factor is (effective # particles or
observed "i" - see "A Closer Look" on page 551, 14th ed., page 558,
13th ed., page 540, 12th ed., 554, 11th ed., page 557, 10th ed.
and my notes).  Look at the link I have about colligative properties
under the "Helpful Tidbits" link,

http://chemistry.osu.edu/~rzellmer/chem1220/faq/collig_prop.txt
<http://chemistry.osu.edu/%7Erzellmer/chem1220/faq/collig_prop.txt>
which was e-mailed earlier.

An "ideal" ionic solution is one in which "i" (van't Hoff factor) equals
the # of ions one gets from the formula when something dissocitates or
ionizes.  For NaCl the ideal "i" would be 2.  For HCl the ideal "i" would
be 2 (HCl is a molecular cmpd and when put in water it completly ionizes
to produce H+ & Cl-). For a weak acid such as acetic acid, CH3CO2H, it
doesn't completely ionize thus it's not possible to determine exactly what
"i" is but it would be between 1, no ionization, and 2, completely
ionized.  This is explained in more detail at the link above.

You should understand how osmosis effects cells.

Finally, you should understand what colloids are and how you tell
whether you have a colloid or a solution (Tyndall effect).  Also, you
should know the difference between hydrophilic and hydrophobic colloids.

You should review section 2.7-2.8 on ions, their charges and polyatomic
ions, which stay together as a single unit when an ionic compound 
dissolves.
Also, review sections 4.1-4.3 which deal with electrolytes and 
nonelectrolytes
in solution and acid/base reactions.  Look at tables 4.2 and 4.3 in relation
to strong and weak acids and bases.


*Homework coverage (you should be able to all problems in the given 
ranges)**:*

You should be able do to homework problems 13.6-13.8, 13.10-13.12,
13.27-13.38, 13.61-13.112, 13.114

For those of you using the 13th edition the quiz covers sections 13.3, 
13.5-13.6
You should be able do to homework problems 13.6-13.8, 13.10-13.12,
13.27-13.38, 13.61-13.112, 13.114

For those of you using the 12th edition the quiz covers sections 13.3, 
13.5-13.6
You should be able do to homework problems 13.6-13.8, 13.10-13.12,
13.27-13.38, 13.61-112

For those of you using the 11th edition the quiz covers sections 13.3, 
13.5-13.6
You should be able do homework problems 13.6-13.8, 13.10-13.12,
13.25-13.34, 13.57-13.112

For those of you using the 10th edition the quiz covers sections 13.3, 
13.5-13.6
You should be able do homework problems 13.5-13.6, 13.8-13.10,
13.23-13.32, 13.55-13.107

*For the on-line homework:**
*
Do ch 13 problems 7-20.


Dr. Zellmer
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