Questions: 3. Determine the concentration of copper in the saturated copper (II)

Question

Questions:

3. Determine the concentration of copper in the saturated copper (II) tartrate solution.

4. Based on the result from question 3, what is the value of Ksp for copper (II) tartrate.

Last Name First Name: Analysis - As always, show all of your work! 1. Create a calibration curve in excel of absorbance versus concentration for the copper standard solutions. Insert a trendline and display the equation on the chart. Attach the graph to the end of this lab report. 2. What is the value of eb from the graph? ee: 15.078 3. Determine the concentration of copper in the saturated copper (II) tartrate solution. 4. Based on the result from question 3, what is the value of Ksp for copper (II) tartrate. If the original sodium tartrate solution had a concentration of 1.00 M instead of 0.100 M, what would the concentration of copper be in a solution created by combining 10 mL of it with 10 mL of the 0.100M copper (II) sulfate solution. Use the Kap you found in the experiment. 5. Page 4 of 4

Explanation / Answer

3)Concentration=0.01481 M

4) Ksp=2.18 x 10^(-4)

5) M1V1=M2V2

0.1x10ml=M2*20ml

M2=0.05

from the Reaction , and initial and final concentrations and equlibrium concentrations.

Ksp= (0.05-x)*(0.05-x)

x=0.035

concentration of Cu2+ is 0.035

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