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<div class="moz-cite-prefix">On 10/4/20 11:47 AM,wrote:<br>
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Hello Professor Pounds,</div>
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I am currently trying to finish the last part of my lab report
where I must manipulate the equations from reactions 2 and 3 to
generate the equation for reaction 4. I am honestly lost as to
how to do this, and I looked at the example of Hess's Law we did
in class, but it isn't making much sense to me in the context of
these equations. Do you have any tips for "jumpstarting" this
process of manipulating the equations? </div>
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Thank you for your help!</div>
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<p><br>
</p>
<p>So in reaction 2 you had ...</p>
<p><br>
</p>
<p>NaOH (s) --> NaOH (aq)</p>
<p><br>
</p>
<p>in reaction 3 you had</p>
<p><br>
</p>
<p>NaOH (aq) + HCl (aq) -> NaCl (aq) + H2O (l)</p>
<p><br>
</p>
<p>and in reaction 4 you had</p>
<p><br>
</p>
<p>NaOH (s) + HCl (aq) -> NaCl (aq) + H2O (l)</p>
<p><br>
</p>
<p>If you add equation 2 and 3 together the NaOH(aq) will cancel you
should get equation 4. So, if you ADD the enthalpies of equation
2 and 3 together you should get the enthalpy of equation 4.</p>
<p><br>
</p>
<p>Does that help?<br>
</p>
<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
Director of the Computational Science Program
Mercer University, Macon, GA 31207 (478) 301-5627
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