Question one: Topic Molecular Spectroscopy (16 marks) * unknown = museture - contains salts You were given an unknown mixture that contains two metal salts (A) Co(NO3)2 and (B) Cr(NO3)2 and requested to determine their concentration. The following representative information about the absorbance data were also provided. Measurements were made in a 1.0 cm quartz cells. Pure A (mol/l) 1.5 x 10-1 0 Pure B (mol/l) 0 6 x 102 Abs @510 nm Abs @575 nm 0.714 0.097 0.298 0.757 0.330 Unknown conc in mixture Unknown conc in mixture 0.671 How would you go about calculating the concentration of the two salts?

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How to calculate the concentration of the two salts?

Question one: Topic Molecular Spectroscopy (16 marks)
* unknown = museture - contains
salts
You were given an unknown mixture that contains two metal salts (A) Co(NO3)2 and (B) Cr(NO3)2 and requested to
determine their concentration. The following representative information about the absorbance data were also
provided. Measurements were made in a 1.0 cm quartz cells.
Pure A (mol/l)
1.5 x 10-1
0
Pure B (mol/l)
0
6 x 102
Abs @510 nm
Abs @575 nm
0.714
0.097
0.298
0.757
0.330
Unknown conc in mixture Unknown conc in mixture 0.671
How would you go about calculating the concentration of the two salts?
Transcribed Image Text:Question one: Topic Molecular Spectroscopy (16 marks) * unknown = museture - contains salts You were given an unknown mixture that contains two metal salts (A) Co(NO3)2 and (B) Cr(NO3)2 and requested to determine their concentration. The following representative information about the absorbance data were also provided. Measurements were made in a 1.0 cm quartz cells. Pure A (mol/l) 1.5 x 10-1 0 Pure B (mol/l) 0 6 x 102 Abs @510 nm Abs @575 nm 0.714 0.097 0.298 0.757 0.330 Unknown conc in mixture Unknown conc in mixture 0.671 How would you go about calculating the concentration of the two salts?
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