At 590 nm, crystal violet (a biological stain) has a molar absorptivity (ε) of 8.7×104 M-1cm-1. Using Beer's Law, calculate the concentration of crystal violet in a solution with a measured absorbance (A) of 1.254. The path length (b) is 1.00 cm.

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A: (a) Given,

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A:

Q: A student prepared a calibration plot for a series of iron(II)-1,10-phenanthroline complex…

A: Molar absorptivity : Also known as molar attenuation coefficient , it measures how strongly a…

Q: A mixture is prepared by combining 10.72 mL of 2.52 x 10-3 M Fe(NO3)3 with 10.00 mL of 1.76 x 10-3 M…

A: Given that: Initial concentration of Fe(NO3)3 is 2.52 x 10-3 M. Volume of Fe(NO3)3 solution is 10.72…

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A: Absorbance ( A ) = molar absorptivity ( ε) x concentration(c) x path length (l)         or, A = εcl…

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A: We would use formula of absorbance given as :  A = ECl  where, E is molar absorptivity which depends…

Q: A solution in part C initially contains (4.2100x10^-4) molar SCN¯ and (3.1700x10^-3) molar Fe3+.…

A:

Q: A student measures k for a certain blue dye to be 400.4 M-1 at 560 nm. What is the molarity of the…

A: According to the Beer's law the absorbance of any substance is directly proportional to the…

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A: The concentration (C) of the substance can be calculated based on the absorbance (A) value using the…

Q: What is the concentration (in M) of a FeSCN2+ solution that has an absorbance of 0.217? trendline…

A: y = (4.2 x 103)x + 0.023 Where, Y = absorbance and x = concentration

Q: If the absorbance of 0.291 M copper (II) chloride solution is 0.497 and the path length of light is…

A: According to Beers Lambert Law- A=ε.l.cwhereA-Absorbanceε-molar extinction coefficientl-path lenght…

Q: A 5.0 mL solution containing 3.36 pm Fe(Ill) ions is diluted to 50.0 mL by first treating with an…

A: We must ascertain the concentration of the FeSCN2+ complex generated as a result of the interaction…

Q: An ethanol solution of 3.5 mg/100 ml of compound Y (150.0 g/mol) in a 1.00 cm quartz cell has an…

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Q: We can determine the copper(II) ion content of a sample using spectrophotometry. The following data…

A: Absorbance is the amount of light absorbed by a substance. The Beer-Lamberts law states that the…

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A:

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A: This is application of the Lambert beer law . Here we are required the molar concentration of X3+…

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A: Absorbance is directly proportional to concentration

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Q: 4. Calculate the expected absorbance of solution of a 5.50x10-6 M solution of Blue # measured at 629…

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A:

Q: Calculate the concentration in ppm of cadmium in an unknown which exhibits an absorbance of 0.179.

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A:

Q: A solution in part C initially contains (4.1000x10^-4) molar SCN¯ and (1.180x10^-1) molar Fe3+. This…

A: Given that: absorbance = 5.150×10-1  initial concentration of Fe3+ = 1.180×10-1 M initial…

Q: What

A: As, you haven't provided value of ε It is solved using, ε=10,800 M-1.cm-1 We know that  A=εlc

Q: A solution in part C initially contains (4.0300x10^-4) molar SCN¯ and (2.880x10^-3) molar Fe3+. This…

A: We have to calculate the equilibrium constant.

Q: A solution in part C initially contains (4.06x10^-4) molar SCN and (2.960x10^-3) molar Fe3+. This…

A: Given the initial concentration values of the reactants: [SCN-(aq)]i = 4.06*10-4 M [Fe3+(aq)]i =…

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.