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Chapter

CHM 1301 Chapter Notes -Dunne D.1, Pasteur Pipette, Spectrophotometry


Department
Chemistry
Course Code
CHM 1301
Professor
Francis Loiseau

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Jaime-lee Yabsley
Chemistry 122A
10028390
Section 21
Pre-lab: Experiment 1. Photochemical Reaction with Ferrioxalate
Concepts and Techniques to Review:
Colour theory
Use of a spectrophotometer
Introduction: This experiment involves the combination of ferric nitrate and oxalic acid to form a
ferrioxalate which undergoes a photochemical reaction when it is introduced to light which
produces ferrous ions. A second solution of potassium ferricyanide is then prepared and added
to the ferrioxalate solution. The substance will be tested using different colours and exposure
times, the ferrioxalate will then be examined by spectrophotometery to discover what colours of
light it absorbs.
Purpose: In this experiment we will examine the properties of photosensitive solutions such as
sensitivity to light as well as heat.
Materials:
Pasteur pipette
600 mL beaker
150mL beaker
1205mL Erlenmeyer flask
Medium-sized test tubes
Hot plate/magnetic stirrer
Petri dishes
Paper
White flood light

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Red flood light
Test tube rack
Potassium ferricyanide
Iron nitrate
Oxalic acid
Distilled water
Experimental Set Up:
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