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<div class="moz-cite-prefix">On 07/25/13 16:37, Mary Caroline Logan
wrote:<br>
</div>
<blockquote
cite="mid:C40B2F181831EF44A88CD7352582780302637CA144@MERCERMAIL.MercerU.local"
type="cite">
<pre wrap="">On exam three, multiple choice question 1: what is the formula you used to find the answer?
Caroline Logan
</pre>
</blockquote>
<font face="serif">So -- to put the two equations together so that
they equal the given reaction you have to reverse the first
reaction and divide it by two and then divide the second reaction
by two before you add them both together.<br>
<br>
That means that to combine the equilibrium constants for the two
reactions you have to do the following.<br>
<br>
</font>
<ol>
<li><font face="serif">Take the square root of the inverse of the
first reaction</font></li>
<li><font face="serif">Take the square root of the second reaction</font></li>
<li><font face="serif">Multiply the two together.</font></li>
</ol>
<p><font face="serif"><img style="vertical-align: middle"
src="cid:part1.03090608.03090205@mercer.edu"
alt="$\sqrt{1/2.3\times 10^{-7}} \sqrt{1.4\times 10^{-3}}$"> =
78<br>
<br>
</font></p>
Look at table 15.2 and the sample problems in that section if you
need further assistance with these.<br>
<br>
<br>
<pre class="moz-signature" cols="72">--
Andrew J. Pounds, Ph.D. (<a class="moz-txt-link-abbreviated" href="mailto:pounds_aj@mercer.edu">pounds_aj@mercer.edu</a>)
Professor of Chemistry and Computer Science
Mercer University, Macon, GA 31207 (478) 301-5627
<a class="moz-txt-link-freetext" href="http://faculty.mercer.edu/pounds_aj">http://faculty.mercer.edu/pounds_aj</a>
</pre>
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