Experiment 9

Experiment 9 - William Sharp Chem 127 Experiment 9-...

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William Sharp Chem 127 Experiment 9- Determining the Concentration Of an Unknown Solute Purpose - To determine the concentration of a metal ion in water. Procedure - In a group of three, obtain three different unknown solutions, one for each member of the group. Make sure each member has the same color solution. Find the Cation of unknown solute by comparing the color of the solution with the color of the available salts. Find the formula of the solution and using the periodic table find the weight of the formula. Using the known salt make a stock solution of a known concentration. To do this, take the weight of the salt (grams) and divide by 1000mL. Using that number multiply by how many total mL will be in solution (i.e. 50mL.) Take seven clean test tubes and make the following concentrations of distilled water to stock solution. Test Tube Volume of Stock Solution (mL) Volume of Distilled Water (mL) 1 1.0 9.0 2 2.0 8.0 3 3.0 7.0 4 4.0 6.0 5 6.0 4.0 6 8.0 2.0 7 10.0 0.0
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This note was uploaded on 04/29/2008 for the course BIO 161 taught by Professor Black during the Spring '08 term at Cal Poly.

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Experiment 9 - William Sharp Chem 127 Experiment 9-...

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