You have a stock solution certified by a manufacturer to contain 225.0 ± 0.4 ug SO-/mL. You would like to dilute it by a fac of 100 to obtain 2.250 ug/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1-mL transfer pipet +0.006 mL 10-mL transfer pipet +0.02 mL 100-mL volumetric flask +0.08 mL

Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN:9781285686691
Author:Crouch
Publisher:Crouch
Chapter14: Chromatography
Section: Chapter Questions
Problem 9P
icon
Related questions
Question
You have a stock solution certified by a manufacturer to contain 225.0 + 0.4 ug SO-/mL. You would like to dilute it by a factor
of 100 to obtain 2.250 ug/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute
uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties.
Glassware
Tolerance
1-mL transfer pipet
+0.006 mL
10-mL transfer pipet
+0.02 mL
100-mL volumetric flask
+0.08 mL
Method A: Dilute 10.00 mL up to 100 mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution
and dilute it again to 100 mL.
0.004
absolute uncertainty: +
ug/mL
Incorrect
Transcribed Image Text:You have a stock solution certified by a manufacturer to contain 225.0 + 0.4 ug SO-/mL. You would like to dilute it by a factor of 100 to obtain 2.250 ug/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1-mL transfer pipet +0.006 mL 10-mL transfer pipet +0.02 mL 100-mL volumetric flask +0.08 mL Method A: Dilute 10.00 mL up to 100 mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again to 100 mL. 0.004 absolute uncertainty: + ug/mL Incorrect
Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask.
0.009
absolute uncertainty: +
ug/mL
Incorrect
Transcribed Image Text:Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. 0.009 absolute uncertainty: + ug/mL Incorrect
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Appl Of Ms Excel In Analytical Chemistry
Appl Of Ms Excel In Analytical Chemistry
Chemistry
ISBN:
9781285686691
Author:
Crouch
Publisher:
Cengage
EBK A SMALL SCALE APPROACH TO ORGANIC L
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:
9781305446021
Author:
Lampman
Publisher:
CENGAGE LEARNING - CONSIGNMENT