Part 1. Construction of a Calibration Graph 1. In a table, present the concentrations of FeSCN²+ (the complex) and absorbance values for solutions 1-5. Show how you calculate the concentration of solution 2. Data and Minor calculation Part 1. Construction of calibration graph Concentration of Fe³+: 0.150M Concentration Concentration of HNO3: 0.10M of SCN1: 5.00 x 10-4 M Wavelength: 460nm Table 1: Blank solution with absorbance

Part 1. Construction of a Calibration Graph 1. In a table, present the concentrations of FeSCN²+ (the complex) and absorbance values for solutions 1-5. Show how you calculate the concentration of solution 2. Data and Minor calculation Part 1. Construction of calibration graph Concentration of Fe³+: 0.150M Concentration Concentration of HNO3: 0.10M of SCN1: 5.00 x 10-4 M Wavelength: 460nm Table 1: Blank solution with absorbance

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: Referring to the posted calibration curve ... A 154 g sample of a ruthenium ore was dissolved and…

A: The calibration curve given is, Given: Mass of sample used = 154 g. Volume of original sample…

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: 2. For the first part of the lab, the following graph was produced. 0.6 Absorbance Curves for BCG…

Q: A 0.4567 g sample of a ruthenium containing ore was dissolved in acid, treated appropriately to…

A: Given - Mass of ore = 0.4567 g Volume of solution = 50.00 ml Absorbance of solution = 0.600 To find…

Q: The following results were obtained when each of a series of standard silver solutions was analyzed…

A: According to Lambert-Beer's law we can say A = Ebc Where A is absorbance, E is molar absorptivity,…

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: f you were plotting a graph of light absorbance versus the concentration of Cu2+ in a solution,…

A: Answer is explained below. For plotting a graph of light absorbance versus the concentration of Cu2+…

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

Q: What is the molar concentration for a solution with a measured absorbance of 0.212 based on this…

A: According to Beer-Lambert’s law, the absorbance of solution can be expressed as:

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: help please answer in text form with proper workings and explanation for each and every part and…

A: Step 1: Certain ions have color, others do not. This happens because of electrons in the d-orbital.…

Q: Calculate the concentration of each ion from the p-function. pRb = 4.27 [Rb+] = pZn = 14.37 [Zn²+] =…

Q: A mixture is prepared by combining 11.18 mL of 2.31 x 103 M Fe(NO)3 with 10.0o0 mL of 1.89 x 103 M…

A: Given that : The volume of Fe(NO3)3=11.18 mLMolarity of Fe(NO3)3=2.31×10-3MThe volume of KSCN=10.00…

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: 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: We have a mixture of 100 mL of Fe3+ solution (1.00 × 10–3 M) and 100 mL of A- ion solution (1.00 ×…

A: We have find out the Balance the equations and the concentrations of the remaining species.Also find…

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: Complete the table below by classifying each species. Unpaired electrons Species 3+ Fe(H₂0)6³+…

A: Ligands are electron rich species that donate electrons to central atom to form co-ordinate bond.

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: If, at equilibrium, the solution prepared in Problem #1 has an absorbance of 0.36, what is the…

A: The absorbance of a solution directly related to the type of solute and concentration of solute.

Q: 25.0 g of an impure sample containing cobalt was dissolved in acid and diluted to 1000.00 mL. 6.00…

A: The final 250.00 mL sample had absorbance equal to 0.410

Q: The absorbance of known concentration of a metal complex is obtained by UV-vis spectrophotometer.…

A: The absorbance of known concentration of a metal complex is obtained by UV-vis spectrophotometer.…

Q: A student collects absorbance versus concentration data for the thiocyanatoiron(III) complex at 510…

A: From Beer Lambert’s Law – A = ∈ClWhere, A = Absorbance ∈= Molar absorptivity C = concentration l =…

Q: Turn in the graph you produced in Excel The value of absorptivity constant (k) is What is the…

A: The graph between absorbance versus concentration is to be plotted here.

Q: UESTION 2 Which answer correctly predicts the multiplicity (the number of peaks as a result of…

A: The structure of the compound is

Q: The absorbance of known concentration of a metal complex is obtained by UV-vis spectrophotometer.…

Q: Refer to the posted calibration curve ... Note that this calibration curve can be read to the 4th…

A: The calibration curve given is, Given: Mass of sample used = 0.4567 g. Volume of sample = 50.00 mL…

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

Part 1. Construction of a Calibration Graph
1. In a table, present the concentrations of FeSCN²+ (the complex) and absorbance values
for solutions 1-5. Show how you calculate the concentration of solution 2.
Data and Minor calculation
Part 1. Construction of calibration graph
Concentration of Fe³+: 0.150M
Concentration of SCN1: 5.00 x 10-4 M
Concentration of HNO3: 0.10M
Wavelength: 460nm
Table 1: Blank solution with absorbance
Solution #
Absorbance
1
0.000
2
0.270
3
0.933
4
0.740
5
0.818

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: Introduction

VIEW

Step 2: Graphical representation

VIEW

Step 3: Data analysis

VIEW

Step 4: Table 1 analysis

VIEW

Solution

VIEW

Step by step

Solved in 5 steps with 1 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

Select all statements that state the purpose of an auxiliary complexing agent and example of its use. a) A completing agent forms a weak complex with analyte ion, thereby keeping it in solution without interfering with EDTA titration. b) NH3 keeps Zn2+ in solution at high pH, but is easily displaced by EDTA. c) A completing agent forms a strong complex with analyte ion, thereby keeping it in solution without interfering with EDTA titration. d) NH3 keeps Zn2+ in solution at high pH, but is not displaced by EDTA.
Roberta decided to find out the content of nickel (Ni) in a sample. She dissolved the 0.0882 g sample in about 30 mL of nitric acid, and after adding an excess of 8- hydroxyquinolinol (HQL), she diluted the solution with deionized water to a final volume of 250 mL. This final solution showed an absorbance of 0.694 at 365 nm, the wavelength of maximal absorbance of the Ni (HQL) complex, when measured in a 1.00 cm cuvette. Knowing that the trendline from the calibration curve for the Ni(HQL) complex at 365 nm is y = 1500x + 0.029 and that the atomic mass of nickel is 58.693 g/mol, calculate the percent content of Ni by mass in the sample. What is the % nickel by mass in the sample? (a) 5.31 percent (b) 7.38 percent. (c) 7.70 percent. (d) 7.4 percent. (e) None of these
A solution in part C initially contains (4.06x10^-4) molar SCN¯ and (2.960x10^-3) molar Fe3+. This solution was then measured using the colorimeter, and an absorbance of (4.9800x10^-1) was recorded.The constant determined in part A of the experiment was found to be (3.8200x10^3). Using the data provided above, determine the equilibrium concentration of SCN", [SCN]E in this solution. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer units
a) If an unknown sample containing FeSCN2+ has an absorbance of 0.542, what is the concentration of FeSCN2+ in the unknown sample? b) What are the units of concentration? c) If the path length of light is 13.5 mm (millimeters), what is the absorptivity coefficient, ?ε, for FeSCN2+? d) What are the units of the absorptivity coefficient, ?ε?
2+ 6. (a) List the formula for each observed Cu(EN),ion, its max and its color.
A student makes a Beer's Law plot of A vs [Fe(SCN)2+] in the first part of the equilibrium constant lab, and gets the following information from the trendline. y = 50.7x R² = 0.9999 If the student measures a absorbance of 0.167 for a solution in the second part of the lab, what equilibrium concentration of [Fe(SCN)²+ would be reported?
3. Using the graph provided, find the concentration of a solution that had an absorption of 0.269 when measured at 460 nm in a 1.0 cm cuvette. Absorbance vs. Concentration 0.45 0.4- y = 4.07x - 0.0046 R = 0.99353 0.35- %3D 0.3- 0.25 0.2- 0.15 - 0.1- 0.05 0.000 0.020 0.040 0.060 0.080 0.100 0.120 Concentration (mM) Absorbance at 460 nm
Consider the fictional transition metal 'Gc' and the complex ions formed with it: [GcI.], [Gc(NH;).]*+, and [Gc(C:O.).]>- If the A of max absorbance for one of the solutions is 450 nm, what are the possible colors for each of the solutions? (A) [GcI]³ could appear yellow, [Gc(NH;).]+ could appear purple, and [Gc(C,O.):]}- could appear blue. (B) [GcI.]- appears purple, [Gc(NH;).]+ could appear yellow, and [Gc(C.O.);]- could appear blue. (C) [GcI6]3- could appear purple, [Gc(NH3)6]3+ could appear yellow, and [Gc(C204)3]3- could appear orange. (D) [GcI6]3- could appear yellow, [Gc(NH3)6]3+ could appear purple, and [Gc(C204)3]3- could appear orange. (E) Not enough info
Using the concentrations found in the experiment for the iron cation and thiocyanate anion determine the Kc for iron (III) thiocyanate using 1.71mL of iron cation solution and 4.00 mL of thiocyanate anion solution. The absorbance for this mixture at 460 nm is 0.339.
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...
Ligand X forms a complex with both cobalt and copper, each of which has a maximum absorbance at 510 nm and 645 nm. respectively. A 0.243 g sample containing cobalt and copper was dissolved and diluted to a volume of 100.0 mL. A solution containing ligand X was added to a 50.0 mL aliquot of the sample solution and diluted to a final volume of 100.0 mL. The measured absorbance of the unknown solution was 0.503 at 510 nm and 0.368 at 645 nm, when measured with a 1.00 cm cell. The molar absorptivities of the cobalt and copper complexes at each wavelength are shown in the table. Molar Absorptivity (c. M-'cm-¹) Wavelength [Co² = A, nm [Cu²+] = 510 645 3.125 x10-5 Incorrect Co 2.867 x10-5 3.7630 x 10² What is the concentration of cobalt and copper in the final diluted solution? 1282 Cu 5707 18090 M M
Can you help me on questions 2 AND 3