c) Standard Addition Variable Volume Calibration Curvei.ii.iii.Vs (ml)0.00.050.250.400.550.700.851.01.15Use the following data and Excel to plot a standard addition variable volumecalibration curve. Use your curve to determine the concentration (ppm) of theunknown sample.Save your calibration curve as a PDF file and upload to eClass.Use the following additional information to complete the table below.• V = total volume (volume of standard + sample)• Vs = volume of standard added• Vo initial volume of sample = 50.0 mL• S₁ = initial concentration of standard = 279 ppm• Is+x = signal measured for a sample containing unknown plus standardV total (mL)50.050.0550.2550.4?????x-variableSi *Vs/V. (ppm)0.00.2791.3952.232?????I(s+x) (μA)1.841.952.813.53.884.394.865.455.67y-variableI(s+x) *V/V. (μA)1.841.951952.824053.528?????

Given that:V= Total volume (volume of standard + sample)Vs= Volume of standard addedVo= Initial…

Standard Addition Variable Volume Calibration Curve i. Use the following data and Excel to plot a standard addition variable volume calibration curve. Use your curve to determine the concentration (ppm) of the unknown sample. Save your calibration curve as a PDF file and upload to eClass. Use the following additional information to complete the table below. total volume (volume of standard + sample) volume of standard added . V ii. iii. Vs • Vo initial volume of sample= 50.0 mL S₁ initial concentration of standard = 279 ppm Is+x= signal measured for a sample containing unknown plus standard

Standard Addition Variable Volume Calibration Curve i. Use the following data and Excel to plot a standard addition variable volume calibration curve. Use your curve to determine the concentration (ppm) of the unknown sample. Save your calibration curve as a PDF file and upload to eClass. Use the following additional information to complete the table below. total volume (volume of standard + sample) volume of standard added . V ii. iii. Vs • Vo initial volume of sample= 50.0 mL S₁ initial concentration of standard = 279 ppm Is+x= signal measured for a sample containing unknown plus standard

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...

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Concept explainers

Applications of Molecular Spectroscopy

When light sources pass through the diffraction grating then light splits into different wavelengths. The light source produces two types of patterns that are shown as destructive and non-destructive. The light source is in the form of quanta that is quantitation.

Question

c) Standard Addition Variable Volume Calibration Curve
i.
ii.
iii.
Vs (ml)
0.0
0.05
0.25
0.40
0.55
0.70
0.85
1.0
1.15
Use the following data and Excel to plot a standard addition variable volume
calibration curve. Use your curve to determine the concentration (ppm) of the
unknown sample.
Save your calibration curve as a PDF file and upload to eClass.
Use the following additional information to complete the table below.
• V = total volume (volume of standard + sample)
• Vs = volume of standard added
• Vo initial volume of sample = 50.0 mL
• S₁ = initial concentration of standard = 279 ppm
• Is+x = signal measured for a sample containing unknown plus standard
V total (mL)
50.0
50.05
50.25
50.4
?
?
?
?
?
x-variable
Si *Vs/V. (ppm)
0.0
0.279
1.395
2.232
?
?
?
?
?
I(s+x) (μA)
1.84
1.95
2.81
3.5
3.88
4.39
4.86
5.45
5.67
y-variable
I(s+x) *V/V. (μA)
1.84
1.95195
2.82405
3.528
?
?
?
?
?

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