exp8_prelab

exp8_prelab - Experiment 8 Beer's Law Learning Objectives...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Experiment 8 Experiment 8 Beer’s Law Beer’s Law
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Learning Objectives Learning Objectives ± Understand and use Beer’s Law Understand and use Beer’s Law ± Gain experience with light absorption Gain experience with light absorption techniques (colorimetry) techniques (colorimetry) ± Utilize the reaction of iron with Utilize the reaction of iron with thiocyanate thiocyanate to determine iron content in to determine iron content in food food
Background image of page 2
Chemical Analysis Chemical Analysis We want to determine the amount of iron present in a food sample (raisins, apple chips, banana chips, dried oregano, and dried parsley) How? An important job of chemists is to determine “how much” of a particular chemical is present in a sample Chemical Components of Peanuts: Iron 2% Vitamin E 10% Niacin 20% Phosphorous 10% Zinc 6%
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The problem … Samples studied usually contain a large mixture of chemicals The solution … Devise a method of singling-out one chemical to analyze in the sample How can we do this for iron?
Background image of page 4
Color Color
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/22/2008 for the course CHEM 112 taught by Professor Bilts during the Spring '08 term at Linn Tech.

Page1 / 14

exp8_prelab - Experiment 8 Beer's Law Learning Objectives...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online