lab 9 Rose

CHM130

Lab 9

Chromatography

Name: Karlee Rose

A. Data Table (12 points)

Paper #
Color
Source
Solvent
Distance Component Moves
Distance Solvent Moves
Rf value
1
Yellow M&M Candies 0.1% Salt Solution
28.88mm
42mm 0.69
2
Yellow Reese’s Pieces 0.1% Salt Solution
16.95mm
32mm
0.53
3 Purple Grape Soda 0.1% Salt Solution
32.15mm
51mm
0.63
4 Purple Grape Koolaid 0.1% Salt Solution
12.12mm
31mm 0.39
5
Red Easter Egg Dye 0.1% Salt Solution
1.18mm
7mm 0.17
6
Red Dry Erase Marker 0.1% Salt Solution
0.15mm
3mm 0.05
7
Red Felt tip pens 0.1% Salt Solution
9.6mm
24mm
0.40
8 Red
Koolaid
0.1% Salt Solution
15.77mm
22mm 0.72
9
Blue Fountain Pen 0.1% Salt Solution
1.15mm
20mm 0.06
10
Blue Ball Point Pen 0.1% Salt Solution
20.5mm
35mm 0.59
11
Black Picasso Ink 0.1% Salt Solution
7.4mm
9mm 0.82
12
Black Parker Ink 0.1% Salt Solution
8.4mm
10mm 0.84

Follow-Up Questions:

1. What is the purpose of a chromatograph? (12 points)
The purpose of chromatograph is used to separate mixtures of substances into their components.

2. Why does the technique call for carrying out the chromatography experiment in a sealed jar? (12 points)
The technique calls for carrying out the chromatography experiment in a sealed jar because some substances may be volatile solvent, conducted in a sealed jar can avoid evaporation of the solvent. Otherwise, your experiment will not work properly since the solvent will evaporate.

3. Describe the comparisons you made. (14 points)
I made comparisons of colored dyes from different sources like Reese’s Pieces and M&M Candies to determine whether the coloring components are the same. I chose the same yellow color. The independent variable I chose is the different brands. The dependent variable is measured using the chromatography paper.

4. What was your independent variable? (15 points)
The independent variable I chose is the different brands.
5. Which colors appeared to contain only one component?