2) What is the relative error in delivering a volume of 18.28 mL from a class A 25 mL buret?(Remember, burets require two readings to deliver a certain volume, pipets only require onereading!)NIST Tolerances for Volumetric Glassware, Class AaTolerances (mL)Capacity (mL)(Less Than and Including)Volumetric FlasksTransfer PipetsBurets1000+0.30500±0.15100+0.08±0.08+0.1050±0.05+0.05+0.0525+0.03+0.03+0.0310+0.02+0.02+0.025+0.02+0.01+0.012+0.006"Corning Pyrex glassware and Kimball KIMAX, Class A, conform to these tolerances.

The objective of the question is to determine the relative error of the given measurement.

2) What is the relative error in delivering a volume of 18.28 mL from a class A 25 mL buret? (Remember, burets require two readings to deliver a certain volume, pipets only require one reading!) NIST Tolerances for Volumetric Glassware, Class Aª Capacity (mL) (Less Than and Including) 1000 500 100 50 25 10 5 2 Volumetric Flasks ±0.30 ±0.15 ±0.08 ±0.05 ±0.03 ±0.02 ±0.02 Tolerances (mL) Transfer Pipets ±0.08 ±0.05 ±0.03 ±0.02 ±0.01 +0.006 Burets ±0.10 ±0.05 +0.03 ±0.02 ±0.01

2) What is the relative error in delivering a volume of 18.28 mL from a class A 25 mL buret? (Remember, burets require two readings to deliver a certain volume, pipets only require one reading!) NIST Tolerances for Volumetric Glassware, Class Aª Capacity (mL) (Less Than and Including) 1000 500 100 50 25 10 5 2 Volumetric Flasks ±0.30 ±0.15 ±0.08 ±0.05 ±0.03 ±0.02 ±0.02 Tolerances (mL) Transfer Pipets ±0.08 ±0.05 ±0.03 ±0.02 ±0.01 +0.006 Burets ±0.10 ±0.05 +0.03 ±0.02 ±0.01

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter9: Column Chromatography: Fluorenone, Cholesteryl Acetate, Acetylferrocene, And Plant Pigments

Section: Chapter Questions

Problem 5Q

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Question

2) What is the relative error in delivering a volume of 18.28 mL from a class A 25 mL buret?
(Remember, burets require two readings to deliver a certain volume, pipets only require one
reading!)
NIST Tolerances for Volumetric Glassware, Class Aa
Tolerances (mL)
Capacity (mL)
(Less Than and Including)
Volumetric Flasks
Transfer Pipets
Burets
1000
+0.30
500
±0.15
100
+0.08
±0.08
+0.10
50
±0.05
+0.05
+0.05
25
+0.03
+0.03
+0.03
10
+0.02
+0.02
+0.02
5
+0.02
+0.01
+0.01
2
+0.006
"Corning Pyrex glassware and Kimball KIMAX, Class A, conform to these tolerances.

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