Chemistry, 05.04.2021 23:40 JohnBranks3258
It was decided to analyze a waste solution that contains an unknown concentration of Mn2 ions using colorimetry. A strong oxidizing agent was added to a 6.20 mL sample of the solution to convert the colorless manganese ions into purple permanganate ions. After the reaction is complete, the solution was diluted to 100.0 mL and analyzed in a colorimeter. The percent transmittance of the solution was determined to be 45.6 %. Also a calibration curve was prepared by using a series of solutions with known concentrations of permanganate and the equation for the best fit line was found.
y= 1.10x103 x + 0.026
1. What is the absorbance of the permanganate in the diluted waste solution?
2. What is the concentration of the permanganate in the diluted waste solution?
3. What is the concentration of the Mn2 ions in the original waste solution?
Answers: 2
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