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<p>It has come to my attention that some of you are having problems
with the second part of the prelab. The mass of the solution
after you add the sodium hydroxide should be 102 grams plus the
mass of the sodium hydroxide. You need to look in the lab
procedures and report form to find the heat capacity of the
resulting solution. Once you find the heat via</p>
<p><img style="vertical-align: middle"
src="cid:part1.67F0887F.2C58B1E5@mercer.edu" alt="$q = m c_s
\Delta T$"></p>
<p><br>
</p>
<p>divide by the heat by the moles of sodium hydroxide to find the
enthalpy. Remember that it is exothermic -- so use the correct
sign.<br>
</p>
<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>
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