Homework Answers
for
part 1 i have plotted a rough graph ( without proper scale ) , but
you just plot graph on graph sheet or on excel sheet , then you
will get the similar straight line plot .
2.) A = 
c l , compare
this equation with Y = mX + C ,
Slope of graph is c
calculated the slope from graph & compared with equation , then it will help in determination of conc. of unknown solution.
The conc. of unknown solution can also be determined from graph.
Add Answer to:
CHEM 1414-General Chemistry II Lab Lab 5 -Page 4 of 4 Can you arsuarthe He fellod...
Beer’s Law Objective : We will explore an application of absorption spectroscopy using calibration curves and...
Beer’s Law Objective : We will explore an application of absorption spectroscopy using calibration curves and Beer’s Law. Use the “LAB : HOW TO…” link from the class website if you need help with how to use balance, Bunsen burner… and such. Introduction: You may write this information in your lab notebook for your own reference. It can’t be cut and pasted. Different solutions have different spectral properties. In this portion of the experiment those properties will be utilized to...
Page 2 of 4 TREATMENT OF DATA: A. Concentration of Biomarker by Spect a linear line...
Page 2 of 4 TREATMENT OF DATA: A. Concentration of Biomarker by Spect a linear line of best fit. Thls is rour callbration curve. Include the rable, Titles with Units, Linear Line of Best Fit, Equation for the Line of table below. Using a spreadsheet ocentration and mean absorbance of the four diluted solutions in the dilutedw. Using a t program, plot the mean absorbance versus concentration of the ed Best Fit anct th the raph:D and R? value. Attach...
Prelaboratory assignment Exp. 4 Beer’s Law 1.Calculate the Concentration of the Crystal Violet Solutions in Table...
Prelaboratory assignment Exp. 4 Beer’s Law
1.Calculate the Concentration of the Crystal Violet Solutions in
Table 1 of the Procedureusing Vinitial x Minitial = Vdiluted x
Mdiluted (Note: Vdiluted = 15 mL). Record the concentrationsin
Table 1 AND in the Data table in the report sheet.
2.Plot the following data as absorbance vs concentration of X in
excel
Absorbance, A Molar Concentration of X
0.045 3.0 x 10-4 mol/L
0.097 6.2 x 10-4 mol/L
0.14 9.0 x 10-4 mol/L...
CHEM LAB hello can someone help me come up with a procedure for this lab it...
CHEM LAB
hello can someone help me come up with a procedure for this
lab
it is an standarization of acid and base solution
• Each student will receive approximately 100 mL of an unknown HCl. The approximate concentration of HCl will be 0.1 M or 1.0 M. There will be a common container with NaOH. The approximate concentration of NaOH will be 0.1 M or 1.0 M. You will be given the approximate concentrations of NaOH and HCl on...
Based on this data, I find it hard to the calculations and analysis and discussion Beer's...
Based on this data, I find it hard to the calculations and analysis
and discussion
Beer's Law Calculations: A. Dilution Calculations 1. Use the actual mass of cobalt(II) nitrate hexahydrate you used to calculate the concentration of your stock solution. 2. Calculate the concentration of your diluted solutions. The easiest way to do this is with the equation MiV2-M2V2. Show the work for the calculation of the concentration of at least one of your dilute solutions. 3. Make a table...
Analysis of Co?by Spectrophotometry 3. Utilizing the data below to calculate the absorbances of your dilutions...
Analysis of Co?by Spectrophotometry 3. Utilizing the data below to calculate the absorbances of your dilutions from part 2 % Transmittance This exam involves using best practices to analyze a Counknown solution. Multiple working standard solutions will be prepared bydiluting a stock solution of Cocle The 0.200M stock solution will be the highest concentration standard it has been analyzed to give the table (below) of absorbances as a function of wavelength. This analysis will be done by spectrophotometry. Measurements are...
Can you help me answer 4&5? Zinc(ll) and the ligand L forma 1:1 complex that absorbs...
Can you help me answer 4&5?
Zinc(ll) and the ligand L forma 1:1 complex that absorbs strongly at 600 am As long as the molar concentration of L exceeds that of Zn(II) by a factor of 5. the absorbance depends only on the cation concentration Neither Zn(ll) nor L absorbs at 600 nm A solution that is 1.59 times 10^-4 M Zn(ll) and 1.00 times 10^-3 M in L has an absorbance of 0,352 in a 1.00-cm cell at 600...
#1, #3, and #5-7 please!!! Pre-Lab Questions 1. Write the balanced chemical equation for the formation...
#1, #3, and #5-7 please!!!
Pre-Lab Questions 1. Write the balanced chemical equation for the formation of FeSCN2" from Fe(NO3)3-9H:0 and NaSCN. 2. In this experiment a dilute solution of 0.1 M HNO is used to maintain the ionic strength and low pH needed for the reaction to occur. How is nitric acid classified in terms of MSDS? What are some of the safety concerns regarding the handling of nitric acid? 3. Look at the procedure for making the standard...
Page 2 of 4 TREATMENT OF DATA: A. Concentration of Biomarker by Spect a linear line of best fit. Thls is rour callbration curve. Include the rable, Titles with Units, Linear Line of Best Fit, Equation for the Line of table below. Using a spreadsheet ocentration and mean absorbance of the four diluted solutions in the dilutedw. Using a t program, plot the mean absorbance versus concentration of the ed Best Fit anct th the raph:D and R? value. Attach...
Prelaboratory assignment Exp. 4 Beer’s Law
1.Calculate the Concentration of the Crystal Violet Solutions in
Table 1 of the Procedureusing Vinitial x Minitial = Vdiluted x
Mdiluted (Note: Vdiluted = 15 mL). Record the concentrationsin
Table 1 AND in the Data table in the report sheet.
2.Plot the following data as absorbance vs concentration of X in
excel
Absorbance, A Molar Concentration of X
0.045 3.0 x 10-4 mol/L
0.097 6.2 x 10-4 mol/L
0.14 9.0 x 10-4 mol/L...
CHEM LAB
hello can someone help me come up with a procedure for this
lab
it is an standarization of acid and base solution
• Each student will receive approximately 100 mL of an unknown HCl. The approximate concentration of HCl will be 0.1 M or 1.0 M. There will be a common container with NaOH. The approximate concentration of NaOH will be 0.1 M or 1.0 M. You will be given the approximate concentrations of NaOH and HCl on...
Based on this data, I find it hard to the calculations and analysis
and discussion
Beer's Law Calculations: A. Dilution Calculations 1. Use the actual mass of cobalt(II) nitrate hexahydrate you used to calculate the concentration of your stock solution. 2. Calculate the concentration of your diluted solutions. The easiest way to do this is with the equation MiV2-M2V2. Show the work for the calculation of the concentration of at least one of your dilute solutions. 3. Make a table...
Analysis of Co?by Spectrophotometry 3. Utilizing the data below to calculate the absorbances of your dilutions from part 2 % Transmittance This exam involves using best practices to analyze a Counknown solution. Multiple working standard solutions will be prepared bydiluting a stock solution of Cocle The 0.200M stock solution will be the highest concentration standard it has been analyzed to give the table (below) of absorbances as a function of wavelength. This analysis will be done by spectrophotometry. Measurements are...
Can you help me answer 4&5?
Zinc(ll) and the ligand L forma 1:1 complex that absorbs strongly at 600 am As long as the molar concentration of L exceeds that of Zn(II) by a factor of 5. the absorbance depends only on the cation concentration Neither Zn(ll) nor L absorbs at 600 nm A solution that is 1.59 times 10^-4 M Zn(ll) and 1.00 times 10^-3 M in L has an absorbance of 0,352 in a 1.00-cm cell at 600...
#1, #3, and #5-7 please!!!
Pre-Lab Questions 1. Write the balanced chemical equation for the formation of FeSCN2" from Fe(NO3)3-9H:0 and NaSCN. 2. In this experiment a dilute solution of 0.1 M HNO is used to maintain the ionic strength and low pH needed for the reaction to occur. How is nitric acid classified in terms of MSDS? What are some of the safety concerns regarding the handling of nitric acid? 3. Look at the procedure for making the standard...
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