) A 0.70 μL sample of an equal volume mixture of 2-pentanone and 1-nitropropane is injected into a gas chromatograph. he densities of these compounds are 0.8124 g/mL for 2-pentanone and 1.0221 g/mL for 1-nitropropane. What mass of each compound was injected? lass of 2-pentanone = mg mg ass of 1-nitropropane = 49 ) The peak areas produced on this injection were 1402 units for 2-pentanone and 1181 units for 1-nitropropane. alculate the response factor for each compound as area per mg. -pentanone: 4.0 units/mg units/mg -nitropropane: 4.0 An unknown mixture of these two components produces peak areas of 1515 units (2-pentanone) and 1446 units (1- itropropane). se these areas and the response factors above to determine the weight % of the components in the unknown sample. -pentanone: 4.0 -nitropropane: 4.0 % %

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter5: Errors In Chemical Analyses
Section: Chapter Questions
Problem 5.12QAP
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a) A 0.70 µL sample of an equal volume mixture of 2-pentanone and 1-nitropropane is injected into a gas chromatograph.
The densities of these compounds are 0.8124 g/mL for 2-pentanone and 1.0221 g/mL for 1-nitropropane.
What mass of each compound was injected?
Mass of 2-pentanone = 4.0
mg
mg
Mass of 1-nitropropane = 4.9
b) The peak areas produced on this injection were 1402 units for 2-pentanone and 1181 units for 1-nitropropane.
Calculate the response factor for each compound as area per mg.
2-pentanone: 4.0
units/mg
units/mg
1-nitropropane: 4.0
c) An unknown mixture of these two components produces peak areas of 1515 units (2-pentanone) and 1446 units (1-
nitropropane).
Use these areas and the response factors above to determine the weight % of the components in the unknown sample.
2-pentanone: 4.0
1-nitropropane: 4.0
%
%
Transcribed Image Text:a) A 0.70 µL sample of an equal volume mixture of 2-pentanone and 1-nitropropane is injected into a gas chromatograph. The densities of these compounds are 0.8124 g/mL for 2-pentanone and 1.0221 g/mL for 1-nitropropane. What mass of each compound was injected? Mass of 2-pentanone = 4.0 mg mg Mass of 1-nitropropane = 4.9 b) The peak areas produced on this injection were 1402 units for 2-pentanone and 1181 units for 1-nitropropane. Calculate the response factor for each compound as area per mg. 2-pentanone: 4.0 units/mg units/mg 1-nitropropane: 4.0 c) An unknown mixture of these two components produces peak areas of 1515 units (2-pentanone) and 1446 units (1- nitropropane). Use these areas and the response factors above to determine the weight % of the components in the unknown sample. 2-pentanone: 4.0 1-nitropropane: 4.0 % %
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