Quiz 2 material

[Robert Zellmer]

Quiz 2 will cover:  Sections 13.5-13.6 and Ch 14 (14.1-14.7)


For 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 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

which was e-mailed earlier.

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.

You should be able do to homework problems 13.10-13.12, 13.61-13.90,
13.98-13.105, 13.112.

For those of you using the 11th edition the quiz covers sections 13.5-13.6
homework problems 13.10-13.12, 13.57-13.86, 13.94-13.103, 13.112.

For those of you using the 10th edition the quiz covers sections 13.5-13.6
and homework problems 13.8-13.9, 13.55-13.82, 13.92-13.98, 13.106-13.107.


Chapter 14 (14.1-14.7):

For sections 14.1-14.3:

Know what rate is and how it is related to concentration (rate law).
Know what a rate law is and how you can use it, what the order is, rate
constant, etc.  Know how reaction rates and stoichiometry are related and
how the rates of disappearance of reactants and appearance of products can
be realted to each other and the rate of the reaction (using the balanced
equation).

Know how to obtain a rate from data and how to use rate data to determine
the rate law using the method of initial rates.  This is shown in the book
in sample ex 14.6 (and the practice exercise) and my notes.  You really need
to learn how to do this using the second example I used in lecture (the long
one).  If you don't you will have problems with some of the end-of-chapter
exercises (especially the last one for section 14.3).

Section 14.4

Know what an integrated rate equation is for zero-order, 1st-order and 2nd-order
reactions and be able to use them.  Know what the half-life is for zero-order,
1st-order and 2nd-order reactions.  This is in section 14.4.  The equations
for zero-order are in the notes and there are a couple of questions in the
chapter 14 handouts passed out in class and on the web (see "notes" link)
about zero and 2nd order.  Be able to do the special problem passed out in
class and sent via e-mail.

Section 14.5

Understand the relationship between temp., activation energy (Ea) and rate constant
(Arrhenus eqn.) and the rate of the reaction.  Understand how all this relates to
collision theory and transition state theory.

Section 14.6:

Understand mechanisms and how to obtain a rate law from a mechanism,
rate laws for elementary reactions, recognize intermediates,
and what molecularity means.

Section 14.7:

Know what catalysts are and the four common characteristics of catalysts,
homogeneous and heterogeneous catalysis, how catalysts work and be able
to recognize a substance as a catalyst or intermediate in a mechanism. Know
how a catalyst affects rate and how this can be seen using the Arrhenus eqn.

You can find these handouts at

http://www.chemistry.ohio-state.edu/~rzellmer/chem122/notes/ch14houts.pdf

You should be able do to homework problems 14.1-14.126

For those of you using the 11th edition the quiz covers sections 14.1-14.7
and homework problems 14.1-14.111

For those of you using the 10th edition the quiz covers sections 14.1-14.7
and homework problems 14.1-14.105


Don't forget the extra homework problems handed out in class.  They can also
be found on the web at the Notes link (see above) or Homework link where you
will also find the solutions,

http://www.chemistry.ohio-state.edu/~rzellmer/chem122/homewk/122ch14hmwk_add.pdf

You will get the integrated rate equations and half-life eqns. on the quiz.
They will not be in any particular order nor will the half-life eqns
necessarily be in the same order as the integrated rate equations.


Dr. Zellmer