Homework Answers
From Beer Lambert's Law, the absorbance of a substance is given by
where 
Hence, the equation for [FeNCS]2+ is written as
As absorbance varies with concentration,
For equilibrium concentration of
For standard concentration of 
From both the equations, we get
Therefore,
Add Answer to:
Show the deruaton of equation Peq Astd L std [FeNCS2.hq. A Х[FeNCS2.1.d(2) The conscentration of ...
What's the concentration of [FeSCN2+] using limiting reactant theory and equation? For each test tube solution...
What's the concentration of [FeSCN2+] using limiting
reactant theory and equation?
For each test tube solution enter the initial concentration of Fe+ and SCNthe equilibrium concentration of FeSCN2: into the ICE table given. Complete entries for the rest of the table and calculate the K value for each of the tables. The values of K should be confined to a narrow range to reflect constancy. Comment on the quality of your work in this regard and calculate the average K....
Standard solutions of [Fe(SCN)2-] were prepared and their absorbance measured in order to study the Keq...
Standard solutions of [Fe(SCN)2-] were prepared and their absorbance measured in order to study the Keq for the reaction Fe3+ + SCN- <=> FeNCS2+ A plot of absorbance verses concentration of [Fe(SCN)2-] is shown below. To determine the Keq for the above reaction, 10.00 mL of 0.00200 M Fe(NO3)3 solution is mixed with 5.00 mL of 0.0020 M KSCN and diluted with 5.0 mL 0f 0.10 M HNO3. The absorbance of this red solution is found to be 0.322....
how do I find the percent t for all? A. Preparation of the Calibration Curve 2A10...
how do I find the percent t for all?
A. Preparation of the Calibration Curve 2A10 Concentration of NASCN in 0.10 M HNO, solution 2x 10 Concentration of Fe(NO,), in 0.10 M HNO, solution Flask Number 2 3 4 5 6 Volume of NaSCN, mL Solution H10 5 Initial [SCN ], M Equil. [FENCS2 ], M Percent T 200 377 Absorbance
A. Preparation of the Calibration Curve 2A10 Concentration of NASCN in 0.10 M HNO, solution 2x 10 Concentration of...
3. Experimental Procedure, Part A.1. For preparing a set of standard solutions of FeNCS, the equilibrium...
3. Experimental Procedure, Part A.1. For preparing a set of standard solutions of FeNCS, the equilibrium molar con- centration of FeNCS is assumed to equal the initial molar concentration of the SCN in the reaction mixture. Why is this assumption valid? A. A Set of Standard Solutions to Establish a The set of standard solutions is used to determine the absorbance of known molar con- centrations of FeNCS2. A plot of the data, known as a calibration curve, is used...
I. Write the equilibrium constant expression, K for the following reaction Fe"(ag) FENCS(ag) SCN (ag) + CFENCS D 2....
I. Write the equilibrium constant expression, K for the following reaction Fe"(ag) FENCS(ag) SCN (ag) + CFENCS D 2. In part A of Experiment 34, it was assumed that all of the SCN added to the reaction mixture was converted to product (FeNCS). Which of the following best explains why that assumption was valid? A) The moles of Fe added equaled the moles of SCN- added. B) In part A, the SCN was the limiting reactant whereas in part B,...
values used for table 2 how do you do the Ice tables??? Experiment V. Equilibrium Constant...
values used for table 2
how do you do the Ice tables???
Experiment V. Equilibrium Constant Lab Report ( 50 pts) Calibration Curve 1. Record the absorbance for each of the standard solutions in the table below. Calculate the concentration of FeSCN)" in each of the standard solutions and record the values in the table below. Show a sample calculation (for A2) of your work in the space below the table. Solution Absorbance [Fe(SCN)" A-1 A-2 A-3 0.000 0.390 0.535...
Calculate the initial concentration of iron(III) in solution #1, #2, #3. Beaker (mL) Table 1. Reagent...
Calculate the initial concentration of iron(III) in
solution #1, #2, #3.
Beaker (mL) Table 1. Reagent Solutions Provided by the Stockroom Solution Name Reagent [Reagent] (M) Volume (mL) Standard iron Fe(NO3)3 2.50 x 10 in 0.10 M HNO3 nitric acid HNO3 0.10 120 35 50 250 conc. SCN KSCN 0.50 30 50 dilute SCN KSCN 2.50 x 10-3 30 50 Worksheet 1 #1 5.00 #2 10.00 #3 15.00 Dilute iron (mL) [Fe**] (M) [Fe(SCN)?*] (M) %T 480 58.9 35.8 21.5...
Show all work to receive full credit. Express answers to the correct number of significant figures. Note: Complete...
Show all work to receive full credit. Express answers to the correct number of significant figures. Note: Complete the table below by calculating the initial SCN and equilibrium Fe(SCN)2+ concentrations for each of the five standard solutions. In addition to the volume of KSCN indicated in the table below each solution contains 5.00 mL of Fe(NO,)a and sufficient 0.050 M HNO3 to produce a total volume of 25.00 mL of solution. 1. Fe3+ +SCN Fe(SCN)2+ 0.00200 M Molarity of KSCN...
The reaction for the formation of the diamine-silver son is as follows: A® LÀ NHÀ ANH...
The reaction for the formation of the diamine-silver son is as follows: A® LÀ NHÀ ANH Nha La Write the equilibrium constant expression for this reaction b. An experiment was carried out to determine the value of the equilibrium constant for the shove reaction Show ICE table Total moles of Ag present Total Moles of NH, present Measured AgNH,) a equilibrium Total solution Volume 3.6 x 10 moles 6.9 x 10 moles 3.4 x 10- moles 100 ml i Calculate...
Table A. Preparation of Standard solutions of FeSCN2+ 1.0 M HNO3 0.002 M 0.200 M Solution...
Table A. Preparation of Standard solutions of FeSCN2+ 1.0 M HNO3 0.002 M 0.200 M Solution KSCN (mL) Fe(NO3)3 (mL) 0.5 5 [FeSCN2+] (mol/L)* 1 4.0x10^-5 Add 1.0 M 2 1.0 5 8.0x10^-5 HNO3 3 1.5 5 1.2x10^-10 4 2.0 5 1.6x10-4 to each to adjust the volume to 25 mL. 5 2.5 5 2.0x10-4 * Calculate the concentrations of FeSCN2+ in each beaker, assuming that all SCN-ions exist as FeSCN2+. In other words, [FeSCN2+] (in Soln 1) = [SCN-]...
What's the concentration of [FeSCN2+] using limiting
reactant theory and equation?
For each test tube solution enter the initial concentration of Fe+ and SCNthe equilibrium concentration of FeSCN2: into the ICE table given. Complete entries for the rest of the table and calculate the K value for each of the tables. The values of K should be confined to a narrow range to reflect constancy. Comment on the quality of your work in this regard and calculate the average K....
how do I find the percent t for all?
A. Preparation of the Calibration Curve 2A10 Concentration of NASCN in 0.10 M HNO, solution 2x 10 Concentration of Fe(NO,), in 0.10 M HNO, solution Flask Number 2 3 4 5 6 Volume of NaSCN, mL Solution H10 5 Initial [SCN ], M Equil. [FENCS2 ], M Percent T 200 377 Absorbance
A. Preparation of the Calibration Curve 2A10 Concentration of NASCN in 0.10 M HNO, solution 2x 10 Concentration of...
3. Experimental Procedure, Part A.1. For preparing a set of standard solutions of FeNCS, the equilibrium molar con- centration of FeNCS is assumed to equal the initial molar concentration of the SCN in the reaction mixture. Why is this assumption valid? A. A Set of Standard Solutions to Establish a The set of standard solutions is used to determine the absorbance of known molar con- centrations of FeNCS2. A plot of the data, known as a calibration curve, is used...
I. Write the equilibrium constant expression, K for the following reaction Fe"(ag) FENCS(ag) SCN (ag) + CFENCS D 2. In part A of Experiment 34, it was assumed that all of the SCN added to the reaction mixture was converted to product (FeNCS). Which of the following best explains why that assumption was valid? A) The moles of Fe added equaled the moles of SCN- added. B) In part A, the SCN was the limiting reactant whereas in part B,...
values used for table 2
how do you do the Ice tables???
Experiment V. Equilibrium Constant Lab Report ( 50 pts) Calibration Curve 1. Record the absorbance for each of the standard solutions in the table below. Calculate the concentration of FeSCN)" in each of the standard solutions and record the values in the table below. Show a sample calculation (for A2) of your work in the space below the table. Solution Absorbance [Fe(SCN)" A-1 A-2 A-3 0.000 0.390 0.535...
Calculate the initial concentration of iron(III) in
solution #1, #2, #3.
Beaker (mL) Table 1. Reagent Solutions Provided by the Stockroom Solution Name Reagent [Reagent] (M) Volume (mL) Standard iron Fe(NO3)3 2.50 x 10 in 0.10 M HNO3 nitric acid HNO3 0.10 120 35 50 250 conc. SCN KSCN 0.50 30 50 dilute SCN KSCN 2.50 x 10-3 30 50 Worksheet 1 #1 5.00 #2 10.00 #3 15.00 Dilute iron (mL) [Fe**] (M) [Fe(SCN)?*] (M) %T 480 58.9 35.8 21.5...
Show all work to receive full credit. Express answers to the correct number of significant figures. Note: Complete the table below by calculating the initial SCN and equilibrium Fe(SCN)2+ concentrations for each of the five standard solutions. In addition to the volume of KSCN indicated in the table below each solution contains 5.00 mL of Fe(NO,)a and sufficient 0.050 M HNO3 to produce a total volume of 25.00 mL of solution. 1. Fe3+ +SCN Fe(SCN)2+ 0.00200 M Molarity of KSCN...
The reaction for the formation of the diamine-silver son is as follows: A® LÀ NHÀ ANH Nha La Write the equilibrium constant expression for this reaction b. An experiment was carried out to determine the value of the equilibrium constant for the shove reaction Show ICE table Total moles of Ag present Total Moles of NH, present Measured AgNH,) a equilibrium Total solution Volume 3.6 x 10 moles 6.9 x 10 moles 3.4 x 10- moles 100 ml i Calculate...
Table A. Preparation of Standard solutions of FeSCN2+ 1.0 M HNO3 0.002 M 0.200 M Solution KSCN (mL) Fe(NO3)3 (mL) 0.5 5 [FeSCN2+] (mol/L)* 1 4.0x10^-5 Add 1.0 M 2 1.0 5 8.0x10^-5 HNO3 3 1.5 5 1.2x10^-10 4 2.0 5 1.6x10-4 to each to adjust the volume to 25 mL. 5 2.5 5 2.0x10-4 * Calculate the concentrations of FeSCN2+ in each beaker, assuming that all SCN-ions exist as FeSCN2+. In other words, [FeSCN2+] (in Soln 1) = [SCN-]...
Most questions answered within 3 hours.
-
For Dijkstra’s shortest path algorithm:
a. Give the Big-O time for Dijkstra’s shortest path algorithm
and...
asked 3 minutes ago -
Phosphorus violates the 'octet rule' in biological molecules,
forming more covalent bonds than expected based on...
asked 6 minutes ago -
A 1.3 eV electron has a 10-4 probability of tunneling
through a 2.4 eV potential barrier....
asked 25 minutes ago -
What is the one ingredient that is common to being successful
with all stakeholders?
profit
trust...
asked 24 minutes ago -
Write an assembly language 32 bit program that reads in lines of
text by a .txt...
asked 26 minutes ago -
what is the density ( in g/L) of hydrogen gas at 29 degrees C and a...
asked 35 minutes ago -
5-6. You are considering three investment alternatives for some
spare cash: Old Reliable Corporation stock (A1),...
asked 27 minutes ago -
Problem 16-02
Receivables Investment
Medwig Corporation has a DSO of 45 days. The company averages
$7,250...
asked 42 minutes ago -
Mr. Brown hired Lowe's Maintenance Services Limited to repair
and paint the exterior wall of his...
asked 42 minutes ago -
When might an index slow down the overall performance of the
database? Choose the best answer....
asked 47 minutes ago -
Due to a recession, expected inflation this year is only 2.25%.
However, the inflation rate in...
asked 49 minutes ago -
Write four functions: (IN PYTHON 3)
1) bound(l) - given a list of integers l, compute...
asked 51 minutes ago