{"id":29,"date":"2024-10-24T11:52:42","date_gmt":"2024-10-24T15:52:42","guid":{"rendered":"https:\/\/sites.temple.edu\/chemdemo\/?p=29"},"modified":"2024-10-25T16:22:27","modified_gmt":"2024-10-25T20:22:27","slug":"electrolytes","status":"publish","type":"post","link":"https:\/\/sites.temple.edu\/chemdemo\/2024\/10\/24\/electrolytes\/","title":{"rendered":"Electrolytes"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Purpose<\/h2>\n\n\n\n<p>Illustrate that ions are necessary to conduct electricity.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Procedure<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Introduction<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Explain the function of the conductivity probe verbally.<\/li>\n\n\n\n<li>Present various solutions to the class.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Prediction<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Ask students to predict the conductivity of tap water.<\/li>\n\n\n\n<li>Note: Tap water may not be conductive enough; consider spiking the beaker with salt if needed.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Testing Solutions<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Conductivity tests for the following:\n<ul class=\"wp-block-list\">\n<li>Distilled water<\/li>\n\n\n\n<li>Tap water<\/li>\n\n\n\n<li>Sugar water<\/li>\n\n\n\n<li>Salt water<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Dilutions<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Use 50:50 dilutions of the following:\n<ul class=\"wp-block-list\">\n<li>HCl<\/li>\n\n\n\n<li>H\u2082SO\u2084<\/li>\n\n\n\n<li>HNO\u2083<\/li>\n\n\n\n<li>CH\u2083COOH (acetic acid)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Alternate Presentation<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Gatorade as Example<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Discuss Gatorade\u2019s claim of containing electrolytes.<\/li>\n\n\n\n<li>Test Gatorade&#8217;s conductivity to verify this claim.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li><strong>Investigate Conducting Components<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Start with distilled water.<\/li>\n\n\n\n<li>Test sugar (High Fructose Corn Syrup).<\/li>\n\n\n\n<li>Add more sugar to see if increased concentration affects conductivity.<\/li>\n\n\n\n<li>Test salt and potassium phosphate.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Conductance Measurement<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use Vernier conductivity meter to show conductance differences in:\n<ul class=\"wp-block-list\">\n<li>0.1 M NaCl<\/li>\n\n\n\n<li>0.2 M NaCl<\/li>\n\n\n\n<li>0.5 M NaCl<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Additional Solutions for Testing<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lead (II) nitrate<\/li>\n\n\n\n<li>KI (Potassium Iodide)<\/li>\n\n\n\n<li>Gatorade<\/li>\n\n\n\n<li>Distilled water (DI water)<\/li>\n\n\n\n<li>Diluted CH\u2083COOH<\/li>\n\n\n\n<li>Glucose<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Purpose Illustrate that ions are necessary to conduct electricity. Procedure Alternate Presentation Conductance Measurement Additional Solutions for Testing<\/p>\n","protected":false},"author":36673,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-29","post","type-post","status-publish","format-standard","hentry","category-demonstrations","entry"],"_links":{"self":[{"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/posts\/29","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/users\/36673"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/comments?post=29"}],"version-history":[{"count":1,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/posts\/29\/revisions"}],"predecessor-version":[{"id":30,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/posts\/29\/revisions\/30"}],"wp:attachment":[{"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/media?parent=29"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/categories?post=29"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sites.temple.edu\/chemdemo\/wp-json\/wp\/v2\/tags?post=29"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}