Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 12, Problem 12.11QAP
Interpretation Introduction
(a)
Interpretation:
The minimum tube voltage needs to be calculated for the excitation of K lines for Ca (3.064).
Concept introduction:
Calculation of minimum tube voltage for the excitation of k lines for Ca is done by using the following formula-
Where,
λo = wavelength
Vmin = minimum tube voltage
Interpretation Introduction
(b)
Interpretation:
The minimum tube voltage needs to be calculated for the excitation of La lines for As (9.370).
Concept introduction:
Calculation of minimum tube voltage for the excitation of k lines for Ca is done by using the following formula-
Where,
λo = wavelength
Vmin = minimum tube voltage
Interpretation Introduction
(c)
Interpretation:
The minimum tube voltage needs to be calculated for the excitation of Lß lines for U (0.592).
Concept introduction:
Calculation of minimum tube voltage for the excitation of k lines for Ca is done by using the following formula-
Where,
λo = wavelength
Vmin = minimum tube voltage
Interpretation Introduction
(d)
Interpretation:
The minimum tube voltage needs to be calculated for the excitation of Lß lines for U (0.496).
Concept introduction:
Calculation of minimum tube voltage for the excitation of k lines for Ca is done by using the following formula-
Where,
λo = wavelength
Vmin = minimum tube voltage
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
The Li2+ ion is hydrogenic and has a Lyman series of lines at 740 747 cm-1, 877 924 cm-1, 925 933 cm-1. and beyond. (a) Show that the energy levels are of the form -hcRLi/n2 and find the value of RLi for this ion. (b) Go on to predict the wavenumbers of the two longest wavelength transitions of the Balmer series of the ion and (c) f ind the ionization energy of the ion.
The Chemistry and Life box in Section 6.7 described the techniquescalled NMR and MRI. (a) Instruments for obtainingMRI data are typically labeled with a frequency, such as 600MHz. In what region of the electromagnetic spectrum doesa photon with this frequency belong? (b) What is the valueof ΔE in Figure 6.27 that would correspond to the absorptionof a photon of radiation with frequency 450 MHz? (c) Whenthe 450-MHz photon is absorbed, does it change the spin ofthe electron or the proton on a hydrogen atom?
7. How many unpaired electrons are there in the following ground-state atoms and ions? For each one,
show work on how you arrived at your answer.
(a) N (b) p³-
(c) Nat
(d) Sc (e) Ag (f) Cd²+ (g) Zr¹+
(h) Mn
(i) Cr
Chapter 12 Solutions
Principles of Instrumental Analysis
Knowledge Booster
Similar questions
- 2. Predict the energy of the 2p electrons in K. [k = 13.6 ev and Szp = 2.579 + 0.333(2p - 1) – 0.0773(3s) - 0.0161(3p + 4s) - 0.0048(3d) + 0.0085(4p)]arrow_forward(a.) By either using line emission spectrum or line absorption spectrum,(i.) describe how the presence of any particles in the space could be detected.(ii.) describe the presence of different types of elements in a sample of matter could be identified.arrow_forwardA solution containing 1.00mg iron (as the thiocyanate complex) in 100mL was observed to transmit 70.0% ofthe incident light compared to an appropriate blank. (a) What is the absorbance of the solution at thiswavelength? (b) What fraction of light would be transmitted by a solution of iron four times as concentrated?arrow_forward
- The fundamental series of the emission spectrum of sodium shows transitions at the vacuum wavelengths (nm) 1846.4, 1268.27, 1083.75, and 996.38. Assuming the quantum defects for the nf levels are zero, and using the 3s --> 3d separation of 29,172.9 cm¹ (ignore the spin-orbit splitting of the 3d level), estimate the ionization energy of sodium (RN109,735 cm'¹).arrow_forwardAtomic spectroscopy is a type of spectroscopic technique that is used for both quantitative and qualitative analysis of an element present in a sample. The atomic absorption lines are very narrow and the line emitted by the radiation source must be the same as the element to be analyzed. (i) (ii) Name two types of line sources that are commonly used in atomic absorption spectroscopy. Suggest two elements that can be determined by each type of the line sources as mentioned in part (a)(i) above.arrow_forwardFish-liver oil is a good source of vitamin A, which is mea-sured spectrophotometrically, after correcting for background, ata wavelength of 329 nm.(a) Suggest a reason for using this wavelength.(b) In what region of the spectrum does this wavelength lie?(c) When 0.1232 g of fish-liver oil is dissolved in 500. mL of sol-vent, the absorbance is 0.724 units. When 1.67X10⁻³g of vita-min A is dissolved in 250. mL of solvent, the absorbance is 1.018 units. Calculate the vitamin A concentration in the fish-liver oilarrow_forward
- ii) Calculate the screening constant (sigma) on a 2p electron of N- and N and for each species. deduce the values of Z* iv) What do you conclude about the relative sizes of N3- and N from the values of Z*?arrow_forwardI understand that n is the energy level, l is the type of orbital (s,p,d,f) and how ms is related to the spin; but what about ml ? I know its equal to -l to +l; however, what does having a specific ml value mean?arrow_forward(d) Where electrons are more likely to be found justify your answers with specific reason [1] b x→ ....arrow_forward
- 18.1 An electron in the ground-state He* ion undergoes a transition to a state specified by the quantum numbers n= 4, 1=1, m,=+1. (a) Describe the transition using term symbols. (b) Calculate the wavelength, frequency, and wavenumber of the transition. (c) By how much does the mean radius of the electron change due to the transition? You need to know that the mean radius of a hydrogenic orbital is n’a 1+회 I(1+1) 1-arrow_forwardAtomic absorption spectrophotometry is a method for the quantitative determination of metal ions. a) Describe in detail the AAS instrument and especially the parts that differ from a normal spectrophotometer. b) What light source is used in this technology and how does it work? c) What interferences can occur with this equipment? d) What is the theoretical basis of the AAS method?arrow_forwardHow do you convert 435.835 λ(nm) to v (s-1)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
ChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill Education
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill Education
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY