Instructions for Side by Side Printing
- Print the notecards
- Fold each page in half along the solid vertical line
- Cut out the notecards by cutting along each horizontal dotted line
- Optional: Glue, tape or staple the ends of each notecard together
Prelab for Thin Layer Chromatography SD
front 1  Image: TLC plate with point of application on left with 4 spots. The ruler underneath shows a distance of 6.20 cm from point of application to solvent front and 0.50 cm to spot 1, 1.50 cm to spot 2, 4.00 cm to spot 3 and 5.50 cm to spot 4. End of image. The Rf of substance "3" is: | back 1  Rf of substance 3 = 4.00 cm / 6.20 cm = 0.65 |
front 2  Three pure compounds (A,B and C) were subjected to TLC. An unknown solution that contains one or more of A, B and/or C. What does the unknown contain? Image: TLC plate A has a spot a third the way up the plate. TLC plate B has a spot about halfway up the plate. TLC plate C has a spot about three quarters up the plate. TLC plate unknown has two spots, one a third the way up the plate and one about three quarters the way up the plate. End of image. | back 2 A and C |
front 3 When subjecting multiple compounds to TLC on a single paper, what is the recommended distance you should have between placement of the spots? | back 3 1 cm |
front 4 What is the maximum recommended diameter of a spot when you put on the TLC paper? | back 4 8 mm |
front 5 When you place the TLC paper in the beaker, the the level of the solvent in the beaker should cover the spots you have placed on the TLC paper.
| back 5 False |