Concentr ck Solution (M) Soution (m then repeat step 13 with your unknown soluti

Question

Concentr ck Solution (M) Soution (m then repeat step 13 with your unknown solution. This step is done individually, not ngroups, you should each have your own unknown solution 0.0100 00200 0.0300 0.0400 5.00 Use the absorbance of the unknown and all three calibration curves to determine the concentration of your unknown solution. (do NOT use proportionality for this determination). Using the theory you have learned in this experiment and your ca bration curve data, propose the CrNOshl of your solution 18. 0010.00 15.00 20.00 inse the sample cuvette with a small portion of your aosOM soh tion, dincarding the rinse into your waste MOS SO.4 30 35 Condinued to Page

Explanation / Answer

Charts are not numbered hence I am assuming linear equation accordingly.

For first wavelength, absorbance = 15.4 × concentration + 0.0822

Concentration of unknown = (0.4509 - 0.0822) / 15.4 = 0.02394M

For second wavelength, absorbance = 10.05 ×conc. + 0.0549

Concentration of unknown = (0.2975 - 0.0549) / 10.05 = 0.02414 M

For third wavelength, absorbance = 12.35 × concentration + 0.0555

Concentration of unknown = (0.3685 - 0.0555) / 12.35 = 0.02534 M

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.