Concept explainers
(a)
Interpretation:
The percent transmittance 11.35% is to be converted into absorbance.
Concept introduction:
The percent of light passing through the sample can be reported in a transmittance. In order to calculate the percent transmittance, the transmittance is multiplied by 100.
(b)
Interpretation:
The percent transmittance 45.6% is to be converted into absorbance.
Concept introduction:
The percent of light passing through the sample can be reported in a transmittance. In order to calculate the percent transmittance, the transmittance is multiplied by 100.
(c)
Interpretation:
The percent transmittance 22.8% is to be converted into absorbance.
Concept introduction:
The percent of light passing through the sample can be reported in a transmittance. In order to calculate the percent transmittance, the transmittance is multiplied by 100.
(d)
Interpretation:
The percent transmittance 1.085% is to be converted into absorbance.
Concept introduction:
The percent of light passing through the sample can be reported in a transmittance. In order to calculate the percent transmittance, the transmittance is multiplied by 100.
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Chapter 6 Solutions
Principles of Instrumental Analysis, 6th Edition
- The absorbance of a 2.31x10^-5 M solution of a compound is 0.822 at 266 nm in a 1.00 mm cuvette. What is the sample's percent transmittance? (A) 15.1% 0.151% 664% 6.64%arrow_forwardThe ultraviolet spectrum of aspirin shows a secondary absorption band at 271 nm. If a solution of aspirin in water, with a concentration of 1×10-4 molar solution is examined at 271 nm, what will be the absorbance reading (ℇ = 1000) and what will be the intensity ratio, IO/I, respectively?arrow_forwardIf the percent transmittance of a colored solution is found to be 35%, what amount of distilled water must be added to 100 ml of this solution in order to have a solution with a percent transmittance of 75%.arrow_forward
- In an analytical laboratory a chemical compound namely Paracetamol (151.163 g/mol) is determined in a sample. A sample weighing 0.0295 g was dissolved in a solvent and diluted the solution to 1 L. The solution has λ max at 243 nm (ε=2.6×104 cm-1 mol-1 L). The solution exhibits an absorbance of 0.638 in a 2 cm cell. Calculate the percentage paracetamol in the sample.arrow_forwardCalculate the path length in centimetres which would give an absorbance of 0.134 of a colored dye with a molar absorptivity of 0.759 L mol-1 cm-1 at a wavelength of 645 nm if the concentration of the dye is 6.82x10-2 M. Report your answer to 3 significant figures.arrow_forwardA solution containing 3.75mg/100 ml of analyte (X) 220 g/mol has a transmittance of 39.6% in a 1.00 cm cell at 480 nm. Calculate a) The molar absorbtivity of X. b) The fraction of light transmitted from a solution three times the mentioned concentration.arrow_forward
- In a 1.00 cm cell, a colored solution transmits 40.0% of the incident light that passed through it. ε = 4.52 x 10³ Lmol-¹cm-¹. Determine absorbance of the solution 0.398 0.220 60.00 0.400arrow_forwardA solution with %T = 75.9% has an absorbance equal to: A = log (1 T) T= (% T 100)arrow_forwardA solution prepared by dissolving 25.8 mg of benzene (78.11 g/mol) in hexane (86.16 g/mol) and diluting to 250 mL had an absorption peak at 256 nm and an absorbance of 0.266 in a 1.000-cm celI. What is the percent transmittance? O 1.84% O 184% O 54.2% O 0.542%arrow_forward
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage LearningMacroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305577190/9781305577190_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305079113/9781305079113_smallCoverImage.gif)