Answer to Question #213278 in Inorganic Chemistry for Pie

Question #213278

Five standard chromium(VI) solutions were prepared through serial dilution technique with corresponding absorbance readings at 540 nm wavelength as follows:

Concentration Absorbance

A1=0.650            C1=1.9  ppm

A2=0.712            C2=4.0  ppm

A3=1.370            C3=6.0  ppm

A4=2.050            C4=8.0  ppm

A5=3.423            C5=10.0 ppm

The sample solution gives an average absorbance reading of 0.713. What is then the concentration of chromium (VI) ion in the sample?


1
Expert's answer
2021-07-05T03:23:48-0400

Concentration of chromium (VI) ion=2.67


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