<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 02/20/2015 08:55 PM,wrote:<br>
</div>
<blockquote
cite="mid:C40B2F181831EF44A88CD73525827803130E198F4A@MERCERMAIL.MercerU.local"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css" style="display:none;"><!-- P {margin-top:0;margin-bottom:0;} --></style>
<div id="divtagdefaultwrapper" style="font-size:12pt;
color:#000000; background-color:#FFFFFF;
font-family:Calibri,Arial,Helvetica,sans-serif">
<p style="margin-top: 0px; margin-bottom: 0px;">Dr. Pounds,<br>
</p>
<p style="margin-top: 0px; margin-bottom: 0px;"><br>
</p>
<p style="margin-top: 0px; margin-bottom: 0px;">I'm working on
the lab for tuesday, and on the report form it asks for
information I<sup>- </sup>. Do we just use the information
given for KI like Molarity (0.30M) and the number of ml, or do
we need to do other calculations to separate the K and I?<br>
</p>
<p style="margin-top: 0px; margin-bottom: 0px;"><br>
</p>
<p style="margin-top: 0px; margin-bottom: 0px;">Thank you,<br>
</p>
<p style="margin-top: 0px; margin-bottom: 0px;"><br>
</p>
</div>
</blockquote>
So you added the I- to your solutions when you added KI. KI is a
strong electrolyte and completely dissociates when placed in water.
As such the molarity of the I- ion is equal to the molarity of KI.
You will need, however, to use the diluted value of I- in your
calculations. For that you can use the dilution equation <img
style="vertical-align: middle"
src="cid:part1.01060203.00020708@mercer.edu" alt="$M_1V_1=M_2V_2$">.
Let me know if you get stuck or have further questions.<br>
<br>
Also remember that your final volume in each flask is 151 ml and not
150 ml. <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>
</body>
</html>