{"id":129,"date":"2017-06-20T17:30:40","date_gmt":"2017-06-20T17:30:40","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/?post_type=chapter&#038;p=129"},"modified":"2017-06-20T17:30:40","modified_gmt":"2017-06-20T17:30:40","slug":"lab-4-instructor-notes","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/chapter\/lab-4-instructor-notes\/","title":{"raw":"Lab 4 Instructor Notes","rendered":"Lab 4 Instructor Notes"},"content":{"raw":"This week's lab is based on Beer's Law and Absorption Spectroscopy.\u00a0 Students will evaluate the spectroscopic curve of solutions containing transition metals.\u00a0 Students will create a calibration curve of the Absorbance vs. Concentration for a series of standards and then use the calibration curve to calculate the concentration of a solution of unknown concentration.\r\n\r\nObjectives:\u00a0 After completing this week's assignments you will be able to:\r\n<div>\r\n<ul>\r\n \t<li>Determine the wavelength of maximum absorbance for copper solutions using a spectrophometer.<\/li>\r\n \t<li>Create a calibration curve using absorbance from a series of standards.<\/li>\r\n \t<li>Calculate the molarity of an unknown by using the equation of best-fit from your calibration curve.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<table border=\"1\">\r\n<tbody>\r\n<tr align=\"center\" valign=\"middle\">\r\n<td><strong>Assignment<\/strong><\/td>\r\n<td><strong>Approximate Time to Complete<\/strong><\/td>\r\n<td><strong>Due Date<\/strong><\/td>\r\n<\/tr>\r\n<tr align=\"center\" valign=\"middle\">\r\n<td>Read over Lab Handout\r\n\r\n*This MUST be printed and brought to class.<\/td>\r\n<td>15 minutes<\/td>\r\n<td>Before Lab<\/td>\r\n<\/tr>\r\n<tr align=\"center\" valign=\"middle\">\r\n<td>View\u00a0Prelab\u00a0Video (Optional)<\/td>\r\n<td>30 minutes<\/td>\r\n<td>Before Lab<\/td>\r\n<\/tr>\r\n<tr align=\"center\" valign=\"middle\">\r\n<td>Complete\u00a0Prelab\u00a0Quiz<\/td>\r\n<td>20 minutes<\/td>\r\n<td>Before Lab<\/td>\r\n<\/tr>\r\n<tr align=\"center\" valign=\"middle\">\r\n<td>Complete Data and Obtain Signature<\/td>\r\n<td>Completed In Class<\/td>\r\n<td>In Class<\/td>\r\n<\/tr>\r\n<tr align=\"center\" valign=\"middle\">\r\n<td>Complete\u00a0Postlab\u00a0Quiz<\/td>\r\n<td>15 minutes<\/td>\r\n<td>Before Next Lab Meeting<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n&nbsp;\r\n\r\n*Prelab\u00a0assignments must be completed prior to coming to lab for a student to be admitted to class.","rendered":"<p>This week&#8217;s lab is based on Beer&#8217;s Law and Absorption Spectroscopy.\u00a0 Students will evaluate the spectroscopic curve of solutions containing transition metals.\u00a0 Students will create a calibration curve of the Absorbance vs. Concentration for a series of standards and then use the calibration curve to calculate the concentration of a solution of unknown concentration.<\/p>\n<p>Objectives:\u00a0 After completing this week&#8217;s assignments you will be able to:<\/p>\n<div>\n<ul>\n<li>Determine the wavelength of maximum absorbance for copper solutions using a spectrophometer.<\/li>\n<li>Create a calibration curve using absorbance from a series of standards.<\/li>\n<li>Calculate the molarity of an unknown by using the equation of best-fit from your calibration curve.<\/li>\n<\/ul>\n<\/div>\n<table>\n<tbody>\n<tr align=\"center\" valign=\"middle\">\n<td><strong>Assignment<\/strong><\/td>\n<td><strong>Approximate Time to Complete<\/strong><\/td>\n<td><strong>Due Date<\/strong><\/td>\n<\/tr>\n<tr align=\"center\" valign=\"middle\">\n<td>Read over Lab Handout<\/p>\n<p>*This MUST be printed and brought to class.<\/td>\n<td>15 minutes<\/td>\n<td>Before Lab<\/td>\n<\/tr>\n<tr align=\"center\" valign=\"middle\">\n<td>View\u00a0Prelab\u00a0Video (Optional)<\/td>\n<td>30 minutes<\/td>\n<td>Before Lab<\/td>\n<\/tr>\n<tr align=\"center\" valign=\"middle\">\n<td>Complete\u00a0Prelab\u00a0Quiz<\/td>\n<td>20 minutes<\/td>\n<td>Before Lab<\/td>\n<\/tr>\n<tr align=\"center\" valign=\"middle\">\n<td>Complete Data and Obtain Signature<\/td>\n<td>Completed In Class<\/td>\n<td>In Class<\/td>\n<\/tr>\n<tr align=\"center\" valign=\"middle\">\n<td>Complete\u00a0Postlab\u00a0Quiz<\/td>\n<td>15 minutes<\/td>\n<td>Before Next Lab Meeting<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>*Prelab\u00a0assignments must be completed prior to coming to lab for a student to be admitted to class.<\/p>\n","protected":false},"author":23588,"menu_order":1,"template":"","meta":{"_candela_citation":"[]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-129","chapter","type-chapter","status-publish","hentry"],"part":22,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/pressbooks\/v2\/chapters\/129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/wp\/v2\/users\/23588"}],"version-history":[{"count":1,"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/pressbooks\/v2\/chapters\/129\/revisions"}],"predecessor-version":[{"id":130,"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/pressbooks\/v2\/chapters\/129\/revisions\/130"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/pressbooks\/v2\/parts\/22"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/pressbooks\/v2\/chapters\/129\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/wp\/v2\/media?parent=129"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/pressbooks\/v2\/chapter-type?post=129"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/wp\/v2\/contributor?post=129"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/chemistry2labs\/wp-json\/wp\/v2\/license?post=129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}