Presentation is loading. Please wait.

Presentation is loading. Please wait.

IRON CONTENT ANALYSIS Due Today: 1. Iron Content Analysis Pre- Lab 2. Neutralizing Power of Antacids Formal Lab Report Homework: 1. Iron Content Analysis.

Similar presentations


Presentation on theme: "IRON CONTENT ANALYSIS Due Today: 1. Iron Content Analysis Pre- Lab 2. Neutralizing Power of Antacids Formal Lab Report Homework: 1. Iron Content Analysis."— Presentation transcript:

1 IRON CONTENT ANALYSIS Due Today: 1. Iron Content Analysis Pre- Lab 2. Neutralizing Power of Antacids Formal Lab Report Homework: 1. Iron Content Analysis Short Report 2. Prepare for Laboratory Final

2  Introduction to ultraviolet-visible (UV-Vis) spectroscopy  Introduction to analytical chemistry  Determine the iron content in vitamin tablets OBJECTIVE

3 KEY TERMS Visible Range: nm UV Range: nm

4  Spectroscopy – measuring the interaction of radiation with matter  Unique wavelength for each substance  Scanning – determine wavelength with maximum absorption  Chemists are most interested in the electromagnetic spectrum between nm KEY TERMS

5

6  Use Volumetric Glassware  Volumetric flask  Graduated pipets  Burets  Use stock solutions dispensed from burets PROCEDURE NOTES

7  Wipe off the cuvette with a Kim-Wipe before inserting into the Spectrophotometer  Record the absorbances!  Record the advertised Iron content from both vitamin bottles! PROCEDURE NOTES

8  Solutions can be disposed of down the drain WASTE

9  Hydrochloric Acid  Danger  Inhalation Hazard  Corrosive RISK ASSESSMENT

10  Hydroquinone  Danger  Harmful if Swallowed  Skin Irritant RISK ASSESSMENT

11  o-phenanthroline  Danger  Toxic if swallowed RISK ASSESSMENT

12 CALCULATIONS

13  Graphing in Excel  Force the trendline through (0,0)  Include the equation of the tendline and R 2 value CALCULATIONS Y = mx A = bc


Download ppt "IRON CONTENT ANALYSIS Due Today: 1. Iron Content Analysis Pre- Lab 2. Neutralizing Power of Antacids Formal Lab Report Homework: 1. Iron Content Analysis."

Similar presentations


Ads by Google