Part D: Determination of % Copper in Complex Note: No credit will be given for t
ID: 1083872 • Letter: P
Question
Part D: Determination of % Copper in Complex Note: No credit will be given for this portion of the report without the calibration curve. Data Table II: Complex I Complex Il Copper Complex Mass of Complex (g) 0.132 136 Calculated [Cu2] Mass of Cu2* (g) % Cu2+ Sample Calculation for Complex I 10. (0.5 pt) (Cu?1 (use absorbance and the equation of the line from calibration curve) Answer 11. (1 pt) Mass of Cu?* (in g) Answer 12, (0.5 pt) % Cu2+ Answer 13. (4 pts) Average % Cu2+ (from complex I & II)- Accuracy in 96 Cu". (± 2%-[4 pts]; ± 2.1-3.0%-[3.5 pts]; ± 3.1-4.0% = [3 pts] 4.1-5.0%-[2.5 pts); 25.0%-[2 pts) Conclusion (0.25 pt) Individual work means work done by one person. Therefore, the grade sheet must be your own work ie. your own calculations, graphs, answers to questions and conclusion.Explanation / Answer
% OF Cu 2+ = mass of Cu/ mass of sample ]*100
= 0.0029/0.1109 *100
=2.6%
% OF Cu 2+ = mass of Cu/ mass of sample ]*100
= 0.00214/0.107*100
=2.0%
Average percentage of mass = 2.62.0/2
= 2.3%
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