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Monday, March 11, 2019

Making A Dilution Series

Aim: To make a dilution series to investigate the concentration

Equipment: A potassium permanganate crystal, six large test tubes, tweezers, a plastic transfer pipette, a test tube rack, 10ml measuring cylinder

Method:
1. Place the six test tubes in a test rack. Label the rack with numbers 1-6
2.  Using the measuring cylinder, fill the test tube 1 with 10 ml of water. Fill the remaining test tubes with 5ml of water
3. Using your tweezers, add a single crystal of potassium permanganate to test tube 1
4. Gently shake the test tube until the crystal has dissolved
5. Using the transfer pipette, carefully remove exactly 5ml from the test tube 1 and pour in into test tube 2
6. Rinse the transfer pipette again and repeat the transfer process for test tube 4, 5 and 6
Results:


Discussion - The solute which is the crystal and the solvent which was the liquids leads to the solution

Solute: The Solid
Solvent: The Liquid
Solution: The Two Things Added Together
Soluble: The Substances Cant Dissolve
-The color goes lighter


1 comment:

  1. Very nice blog post Lily- Ray! I love the inclusion of those definitions but make sure you tell me what there were in this particular experiment. Eg, the solute was potassium permangenate here. Great picture as well, keep up the good work!!

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