Lab1_dilution

Lab1_dilution - the fill line with distilled water making...

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Amy Corcoran January 24, 2011 Experiment (iii) Informal Report TECHNIQUES IN PREPARING SOLUTIONS Purpose: To accurately create a solution that is concentrated to 10 PPM by. Experiment: First I measured out 0.0500 grams of dye by using the analytical lab balance to get an accurate reading. Then I funneled the 0.0500 grams of dye into a 50 milliliter volumetric flask. I then proceeded to fill the volumetric flask to the fill line with distilled water making sure I washed all dye residues off of the funnel and into the flask. After doing so, I took a 1 milliliter pipette and gathered 1 milliliter of the solution and placed it into a 100 milliliter volumetric flask. Then I filled the 100 milliliter volumetric flask to
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Unformatted text preview: the fill line with distilled water making my second dilution. By my calculations of using the dilution formula, (vi)(ci) = (vf)(cf), I have accurately created a solution that is 10 PPM. Error: During the experiment, the analytical lab balance could have inaccurately measured the dye as it is difficult to measure such a small mass. Also while creating the second dilution, some solution was still left in the pipette from the first dilution making the second dilution inaccurate to a certain percentage. Conclusion: Since I am unsure of the final concentration, my results are inconclusive....
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This document was uploaded on 10/05/2011.

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Lab1_dilution - the fill line with distilled water making...

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