<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 07/20/14 19:00, wrote:<br>
</div>
<blockquote
cite="mid:C40B2F181831EF44A88CD73525827803130774D8FC@MERCERMAIL.MercerU.local"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<style type="text/css" style="display:none"><!--P{margin-top:0;margin-bottom:0;} .ms-cui-menu {background-color:#ffffff;border:1px rgb(166, 166, 166) solid;font-family:'Segoe UI','Segoe WP','Segoe UI WPC',Tahoma,Arial,sans-serif;font-size:10pt;color:rgb(51, 51, 51);} .ms-cui-menusection-title {display:none;} .ms-cui-ctl {vertical-align:text-top;text-decoration:none;color:rgb(51, 51, 51);} .ms-cui-ctl-on {background-color:rgb(205, 230, 247);opacity: 0.8;} .ms-cui-img-cont-float {display:inline-block;margin-top:2px} .ms-cui-smenu-inner {padding-top:0px;} .ms-owa-paste-option-icon {margin: 0px 6px 0px 6px;vertical-align:middle!important;padding-bottom: 2px;display:inline-block;} .ms-rtePasteFlyout-option:hover {background-color:rgb(205, 230, 247) !important;opacity:1 !important;} .ms-rtePasteFlyout-option {padding:8px 4px 8px 4px;outline:none;} .ms-cui-menusection {float:left; width:85px;height:24px;overflow:hidden}.wf {speak:none; font-weight:normal; font-variant:normal;
text-tran
sform:none; -webkit-font-smoothing:antialiased; vertical-align:middle; display:inline-block;}.wf-family-owa {font-family:'o365Icons'}@font-face { font-family:'o365IconsIE8'; src:url('https://r4.res.outlook.com/owa/prem/16.0.317.11/resources/styles/office365icons.ie8.eot?#iefix') format('embedded-opentype'), url('https://r4.res.outlook.com/owa/prem/16.0.317.11/resources/styles/office365icons.ie8.woff') format('woff'), url('https://r4.res.outlook.com/owa/prem/16.0.317.11/resources/styles/office365icons.ie8.ttf') format('truetype'); font-weight:normal; font-style:normal;}@font-face { font-family:'o365IconsMouse'; src:url('https://r4.res.outlook.com/owa/prem/16.0.317.11/resources/styles/office365icons.mouse.eot?#iefix') format('embedded-opentype'), url('https://r4.res.outlook.com/owa/prem/16.0.317.11/resources/styles/office365icons.mouse.woff') format('woff'), url('https://r4.res.outlook.com/owa/prem/16.0.317.11/resources/styles/office365icon
s.mouse.t
tf') format('truetype'); font-weight:normal; font-style:normal;}.wf-family-owa {font-family:'o365IconsMouse'}.ie8 .wf-family-owa {font-family:'o365IconsIE8'}.ie8 .wf-owa-play-large:before {content:'\e254';}.notIE8 .wf-owa-play-large:before {content:'\e054';}.ie8 .wf-owa-play-large {color:#FFFFFF/*$WFWhiteColor*/;}.notIE8 .wf-owa-play-large {border-color:#FFFFFF/*$WFWhiteColor*/; width:1.4em; height:1.4em; border-width:.1em; border-style:solid; border-radius:.8em; text-align:center; box-sizing:border-box; -moz-box-sizing:border-box; padding:0.1em; color:#FFFFFF/*$WFWhiteColor*/;}.ie8 .wf-size-play-large {width:40px; height:40px; font-size:30px}.notIE8 .wf-size-play-large {width:40px; height:40px; font-size:30px}.notIE8 .wf-owa-triangle-down-small:before {content:'\e052';}.ie8 .wf-owa-triangle-down-small:before { content:'\e052';}.ie8 .wf-owa-triangle-down-small {color:#666666/*$WFGreyColor*/;}.wf-size-x20 {font-size: 20px!important;}--></style>
<p>Hi Dr. Pounds,</p>
<p><br>
</p>
<p>I have noticed that for several of the acid and base problems
that you assume x to be negligible. How are determining when it
is or isn't?<br>
</p>
</blockquote>
<br>
<font face="serif">Look back at lecture slide 37 for chapter 16.
If the concentration of the weak acid or base divided by the
appropriate dissociation constant is greater than 1000 then it is
safe to use the approximation.<br>
<br>
</font><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>