The absorbance of 1.48 x 105 M methyl red solution, prepared in 0.1 M HCI, was measured using a 1.0 cm cell (cuvette) and found to be 0.550 at 524 nm. Calculate the molar absorption of methyl red under these conditions. Select one: O42956 M¹ cm 18524 M¹ cm 37162 M-¹ cm¹¹ 12760 M¹cm¹

The absorbance of 1.48 x 105 M methyl red solution, prepared in 0.1 M HCI, was measured using a 1.0 cm cell (cuvette) and found to be 0.550 at 524 nm. Calculate the molar absorption of methyl red under these conditions. Select one: O42956 M¹ cm 18524 M¹ cm 37162 M-¹ cm¹¹ 12760 M¹cm¹

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: extinction coefficient = ε, path length = b, concentration C A sample containing an unknown…

Q: What is the

Q: Ni2+ appears green in solution, so its concentration can be determined spectrophotometrically. A…

A: Since in absorbance v/s concentration plot, we plot the absorbance value in y axis and concentration…

Q: Calaculate the initial concentration of [Fe3+] and [SCN-] of a solution with 5 mL of 0.002 M…

A: The given data is written as follows The 5ml of 0.002 M of Fe(NO3)3 The 2ml of 0.002 M of KSCN The…

Q: The Keq for imidazole binding to hemoglobin can be determined from the following linear equation,…

A: Reciprocal of change in absorbance is plotted versus the reciprocal of imizdazole concentration.To…

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…

Q: A solution containing a complex formed between thiourea and Bi (III) has a molar absorptivity of…

A: The Beer-Lambert law states that for the given sample of particular path length and concentration…

Q: A student collects the following data for the absorbance of a complex measured in 1.00 cm…

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

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

Q: The absorption coefficient of O2 in seawater at 0°C is 1.7 mmol/L.What is the concentration of O2 if…

A: Given information, The absorption coefficient of O2 in seawater at 0°C is 1.7 mmol/L.

Q: A standard solution was put through appropriate dilu tions to give the concentrations of iron shown…

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: The standard curve was made by spectrophotographic analysis of equilibrated iron(III) thiocyanate…

A: Given the linear regression equation for the analysis of the standard solution is Y =…

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: For the UV-Vis absorption data below, calculate the concentration (106 M) for the metals N²+ in a…

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…

A: Given- Ethanol solution = 3.5 mg/100 ml Molar mass of compound Y = 150.0 g/mol l = 1.00 cm…

Q: A FeSCN complex, whose maximum absorbance is at a λ of 580 nm, has a molar extinction coefficient of…

A: The concentration is approximately 54.9 ppm M

Q: Copper was determined in an alloy sample by UV-visible spectrophotometry. The standard addition…

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…

Q: As part of an investigation on Pb in biological ecosystems, some grasses that grew along the road…

Q: The ultraviolet spectrum of aspirin shows a secondary absorption band at 271 nm. If a solution of…

A: The absorbing species obey Lambert beer law

Q: constant obtained in this experiment, calculate the absorbance of the solution of 0.0600 M CoCl2. My…

A: Absorbance=ECl E is beers law constant l =1

Q: concentration for a solution having an absorbance of 0.350 and a molar absorptivity of 420 L mol-1…

A: Absorbance is directly proportional to concentration

Q: Mercury(II) forms a 1:1 complex with triphenyltetrazolium chloride that exhibits an absorption…

A: Step 1: Step 2: Step 3: Step 4:

Q: 1) A Chem 102 Student prepared a cobalt coordination compound. Parts "a-c" refer to this problem. a)…

A: A numerical problem based on quantitative analysis, which is to be accomplished.

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

A: Given concentration = 5.50 ×10-4 M cell length (l) = 1.5 cm molar absorptivity = 1.30 ×105…

Q: A spectrophotometer was calibrated with a 7.236 x 10-4 M (in Cu) Cu-neocuproine solution. This…

A: The question is based on the concept of photochemistry. We need to calculate concentration of…

Q: You measured the absorbance of a solution of 0.2 mM NADH at 340 nm and the reading was 0.55.…

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

A: Using given data a calibration curve generated in Excel by plotting Absorbance versus Concentration.…

Q: A student wants to determine the concentration of iron ion in a 15.000 gram solid that contains…

A: As the solution is absorbing green light, the color of the solution would be red according to color…

Q: Calculate the absorbance of 0.00038 moles in 24.2 mL of solution given the molar absortivity is 1168…

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: o measure the absorbance of Fe(SCN)2+, write a procedure (detailed in steps) to accurately determine…

A: The wavelength and intensity of electromagnetic radiation is determine by the colorimetry.

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: Calculate the absorbance of the vitamin solution at 324 nm (sample pathlength = 1.00 cm)

A: ** This question can be solved with the help of Beer - Lambert's law **Beer - lambert's law states…

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 =…

Concept explainers

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.

Question

The absorbance of 1.48x 105 M methyl
red solution, prepared in 0.1 M HCI, was
measured using a 1.0 cm cell (cuvette) and
found to be 0.550 at 524 nm. Calculate the
molar absorption of methyl red under
these conditions.
Select one:
42956 M¹ cm-¹
<
18524 M²¹ cm 1
O37162 M.¹ cm ¹
12760 M¹¹cm¹

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Suppose that a solution has an absorbance of 0.250 at a wavelength of 450 nm. If the concentration of the solution is 22 μM, what is the value of the molar absorptivity? The data were taken with a standard 1-cm cuvette. molar absorptivity in (L cm^−1 mol^-1):
What would be a reasonable guess for the wavelength of maximum absorbance for FD&C Orange 2?
A student measures k for a certain blue dye to be 600.4 M-¹ at 560 nm. What is the molarity of the dye in a solution with an absorbance of 0.204 at this wavelength? Ens nousior #inslo: Monia sin 8 foi 00.01 Par det id elsem. sow & netimuloa 51 (5) sonos silf et trawIm 00 001 et gauzulib im
A series of standard iron-phenanthroline [Fe(phen)3]2+ complex ion solutions were prepared. The absorbance of each solution was measured at a wavelength of 510 mm. A calibration curve of absorbance vs. concentration was then plotted to obtain a linear equation of y = 0.0018x+0.0749. The absorbance of an unknown [Felphenly solution was measured to be 0.326. Calculate the concentration of the complex ion. NOTE! Report your answer as a WHOLE #. Type your answer...
The absorbance of 10 mL of 0.0005 M Co2+ solution is 0.35. 10 mL of this solution mixed with 10 mL of the sample solution produces an absorption of 0.52. Calculate the concentration of Co2+ in the sample
A mixture is prepared by combining 11.34 mL of 2.36 x 103 M Fe(NO3)3 with 10.00 mL of 1.66 x 10-3 M KSCN. The solution turns red due to the formation of FeSCN2+. The absorbance is measured and, using a calibration plot, the [FESCN2*] at equilibrium is found to be 2.20 x 10-4 M. Complete the following ICE table Fe3+ SCN 1t FESCN2+ initial (M) (A) (B) (C)0 change (M) (D) (E) (F) equilibrium (M) (G) (H) (1) What is the value of K?
You did not allow enough time for the solution to reach equilibrium before measuring its absorbance. Explain how this will affect the reported value of Kc.
You have analyzed an unknown sample that produces an absorbance of 0.372. The pathlength is 1 cm and the concentration in 2.1 M. What is the molar absorption coefficient of the sample? Show your calculation.?
A student is working with a metal thiocyanate complex, M(SCN)+, with a molar absorptivity constant, ε, of 6500 cm−1M−1 at 500 nm. If the student is using a 1.00 cm cuvette for absorbance measurements at 500 nm, what concentration of M(SCN)+ will give an absorbance value of 0.120? [M(SCN)+]=