Question

I'm doing this lab for Chemistry and I have NO materials. Can someone help or tell me what will happen with this procedure?

Answer 1

Chromatography: Separating Mixtures

Introduction:

Magic marker inks are often mixtures of several compounds. Paper chromatography is a common method of separating various components of a mixture. After separation, you can observe the different colors that make up a particular color of magic marker ink.

You can also calculate a ratio Rf, which compares how far each compound traveled to how far each solvent (substance that dissolves another substance) traveled during the experiment.

Rf = Ds/Df
Ds = Distance traveled by the compound
Df = Distance traveled by the solvent

Materials:

coffee filter, tape, rubbing alcohol, water, 3 different color magic markers (not permanent); 3 identical tall, narrow drinking glasses; metric ruler, 3 pencils

Procedure:

1. Cut 3 strips of coffee filter. Be sure that the strips are much narrower and slightly taller than the drinking glasses.
2. In the center the strips, about 3 cm from one end, place a dot of the marker to be tested. The dots should be about 0.2 cm in diameter and dark enough to be clearly visible.
3. Place about 2 cm of water in each glass.
4. Tape the unmarked end of each strip to the center of a pencil so that the strip hangs down when the pencil is held horizontally.
5. Carefully insert the strips into the glasses, dotted end down. The dot must be above the water, and the sides of the coffee filters cannot touch the sides of the glasses.
6. Let the setup stand for 20 minutes. Follow procedure 8 as your setup stands.
7. Record your observations after 20 minutes in the table below. Measure Df (in cm) for the solvent. Measure the Ds (in cm) for each color that you see on the coffee filter (there may not be three). Calculate the Rf for each color using the equation in the Introduction section.
8. Repeat steps 1–7, except place about 2 cm of rubbing alcohol in each glass instead of water.
9. Clean up your work area.

Data:

Marker Color _______________ _________________ __________________

Solvent: Df Colors Ds Rf Df Colors Ds Rf Df Colors Ds Rf
Water ___ _____ ___ ___ ___ _____ ___ ___ ___ _____ ___ ___

Solvent: Df Colors Ds Rf Df Colors Ds Rf Df Colors Ds Rf
Rubbing ___ _____ ___ ___ ___ _____ ___ ___ ___ _____ ___ ___
Alcohol

Answer 2

well what will happen is not possible to tell because you are beeing asked to do an actual experiment and get actual values... so i cant tell you which color marker will have what values of Ds and what your front value Df will be... sorry
unless somebody actualy did this experiment and has values you are doomed to experiment which is fun part of chemistry