5 a) A cell of 10 mm path length contains ferric chloride solution of 0.002M. An electromagnetic radiation of Ã= 400 nm is passed through it and the absorbance is 0.60. Determine its molar absorption coefficient and transmittance.

5 a) A cell of 10 mm path length contains ferric chloride solution of 0.002M. An electromagnetic radiation of Ã= 400 nm is passed through it and the absorbance is 0.60. Determine its molar absorption coefficient and transmittance.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter20: Molecular Spectroscopy And Photochemistry

Section: Chapter Questions

Problem 4P

See similar textbooks

Related questions

Q: A 7.25 x 10 ^-5 M solution of potassium permanganate has a transmittance of 44.1% when measured in a…

Q: 3. A 2.50×104M solution of a dye has an absorbance of 0.680 when measured in a 1.00 cm cell at 625…

A: The relation between absorbance and transmittance is given by A=2-logT or A=-logT where A=…

Q: s prepared and its absorbance was recorded with a 0.01 cm sample cell to give 0.88 % transmittance…

A: Given, %T = 0.88 l= 0.01 cm Wavelength λ = 400 nm = 4×10-9m 1) Thienothiophene, Molar absorption…

Q: Draw the structure(s) of the monomer(s) used to make each polymer

Q: 5. A 7.25x104 M solution of Potassium cyanide (KCN) has a transmittance of 45.2% when measured in a…

A: Please find your solution below : Beer-Lambert law is a law that gives the relation between the…

Q: The percentage transmittance of light at 250 nm through a certain aqueous solution is 20.0% at 25°C.…

A: Given information, Percentage transmittance is 20.0% at 25°C. Experimental cell length is 1.0 cm,…

Q: A 2.0 mm cell was filled with a solution of benzene in a non-absorbing solvent. The concentration of…

A: The transmittance and absorbance can be expressed in term of initial light intensity (I0) and…

Q: .A 8 × 10-5 M solution of potassium permanganate has a transmittance of 45% when measured in 2.0 cm…

A: Concentration of Solution = 8 × 10-5 M Transmittance = 45 % Path length = 2.0 cm Wavelength = 526…

Q: Calculate the percent transmittance (%T) for a solution containing a colored species with an…

Q: A 5.00 mm cell was filled with a solution of a dye. The concentration of the dye was 18.5 mmol dm−3.…

A: When a light is passed through a solution, some light is absorbed by the solution and some light is…

Q: Why should absorbance be less than 2? Please explain in terms of light transmittance

A: Absorbance A also called the optical density , is the quantity of light absorbed by a solution.

Q: A solution of a certain dye has a concentration of 0.000100 mol L-1 and gives an absorbance of 1.234…

A: Answer:- This question is answered by using the simple concept of Beer's law which involves the…

Q: An aqueous solution of a Ni2+ complex with a concentration of 8.61 × 10–5 M was analyzed by a UV-VIS…

A: The relationship between absorbance and transmittance can be expressed as follows: A = -logTA =…

Q: A 7.21 x 10−5 M solution of potassium permanganate has a transmittance of 52.1% when measured in a…

A: Transmittance (T) is defined as the ratio of intensity of transmitted light (I) to the intensity of…

Q: The absorption coefficient of bovine immunoglobin (molecular mass= 150,000 Daltons) at 280nm is…

A: Given:Molecular mass= 150,000 Daltons The absorption coefficient = 210,000Wavelength = 280nmThe…

Q: A 50.0 mg sample was dissolved in acid and then diluted to a total volume of 50.00 mL. If 1.000 mL…

A: In spectrophotometric measurements of analyte concentration, measured absorbance related to the…

Q: The transmittance of a solution measured at 590 nm in a 1.5-cm cuvette was 76.2%. (a) What is the…

A: We have to predict the absorbance, absorptivity and the concentration.

Q: Radiation of wavelength 268 nm passed through 1.5 mm of a solution that contained benzene in a…

A: Introduction: Beer-Lambert law: Beer Lambert law shows the relationship between the absorbance and…

Q: The absorbance of 1.48 x 105 M methyl red solution, prepared in 0.1 M HCI, was measured using a 1.0…

Q: A 2.50*10–4M solution of a dye has an absorbance of 0.860 when measured in a 1.00 cm cell at 625 nm.…

A: The relationship between transmittance T and Absorbance A is A = - log(T) => T = 10-A…

Q: A solution of KMnO4 has an absorption of 0.560. Calculate the corresponding transmittance. 0.275…

A: Given: absorbance = 0.560 To find: The transmittance of the sample

Q: An aqueous solution of a triphosphate derivative of molar mass 502 g mol-1, was prepared by…

A: Beer Lambert's Law: This law states that there is a linear relationship between the concentration…

Q: Calculate the molar absorbance coefficient and the transmittance for a solution twice the…

A: Absorbance = E*c*l

Q: A student mixed 5.00mL of 0.0020M Fe(NO3)3, 3.00mL of 0.0020M KSCN, and 3.00mL of distilled water.…

Q: (Part A When ultraviolet radiation of wavelength 400nm passes through 2.50 mm of a solution of an…

Q: A solution containing 3.75mg/100 ml of analyte (X) 220 g/mol has a transmittance of 39.6% in a 1.00…

A: It is an application of Lambert Beer law Here we are required to find the molar absorptivity and…

Q: A solution shows a transmittance of 20%, when taken in a cell of 2.5 cm thickness. Calculate…

Q: What is the absorbance of a solution if it had 79.5% transmittance?

Q: A 0.0045 M solution was analyzed using the Spectronic 20 instrument and has 37.0% transmittance at…

A: This problem is based on Lambert Beer's Law and relationship between absorbance and transmittance is…

Q: (d) The Beer-Lambert law states that the absorbance (A) of light by a solution in a cuvette is given…

A: Given that the formula of the Beer-Lambert law is

Q: The following data have been obtained in the calibration of a series of standards for the…

A: Please have a look on the solution :

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

100%

5 a) A cell of 10 mm path length contains ferric chloride solution of 0.002M. An
electromagnetic radiation of X= 400 nm is passed through it and the absorbance is
0.60. Determine its molar absorption coefficient and transmittance.
b) The rotational constant B for 'HCl is 12.00 cm'. Calculate B for 'H°CI and 'H"Cl.
c) Define Lambert-Beer law and write the equations used for this law. Discuss its
limitations.

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

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps

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

I need the answer as soon as possible
Thienothiophene and sexithiophene are conjugated molecules used in printed organic electronics. A chlorobenzene solution of equal concentrations of the two molecules was prepared and its absorbance was recorded with a 0.01 cm sample cell to give 0.88 % transmittance (T) at 400 nm. Calculate the concentration of each of the molecules given that the molar absorption coefficient of the thienothiophene is 23,000 L.mol-1cm-1 and the sexithiophene is 34,000 L.mol-1cm-1. Remember that absorbance is additive.
Beer's law can be used to determine the concentration of two substances A and B in solution, provided they do not react or interact, so they absorb radiation independently. The following data were obtained for A and B in three different solutions: [A] mol L- mol L-1 at a = 400 nm at A = 500 nm [B] Transmittance Transmittance Solution 1 0.0010 10.0 60.0 Solution 2 0.0050 80.0 20.0 Solution 3 ? ? 40.0 50.0 Calculate the concentrations of A and B in Solution 3.
4. (Part A When ultraviolet radiation of wavelength 400nm passes through 2.50 mm of a solution of an absorbing substance at a concentration 0.717 mmol/dm?, the transmission is 61.5%. Calculate the molar absorption coefficient of the solute at this wavelength. (Part B A molecular absorption transition has a molar absorption coefficient (extinction coefficient) of 60,220 dm/mole cm. What is the absorption cross-section in cm?/molecule?
(i) Explain why Beer's Law breaks down when absorbance values are < 0.005. (ii) Explain the operation of a calcium source used in atomic absorbance spectroscopy. (iii) Explain why the calcium source described above will not operate for the quantification of magnesium.