During an assay of paracetamol by UV an analyst prepares a series of calibration solutions containing approximately 3-15 mcg/mL paracetamol as follows: • 141.7 mg of pure paracetamol was added to a 200 mL volumetric flask. • 0.1 M NaOH (50 mL) was added, the mixture well shaken and made up to volume with deionized water • 10 mL of the above solution was diluted to 100 mL a) What is the concentration of the final diluted solution in mcg/mL? Answer = mcg/mL (1 decimal) b) What volume of the diluted solution is required to prepare 100 mL of a 11 mcg/mL standard solution? Answer = mL (1 decimal) 33

During an assay of paracetamol by UV an analyst prepares a series of calibration solutions containing approximately 3-15 mcg/mL paracetamol as follows: • 141.7 mg of pure paracetamol was added to a 200 mL volumetric flask. • 0.1 M NaOH (50 mL) was added, the mixture well shaken and made up to volume with deionized water • 10 mL of the above solution was diluted to 100 mL a) What is the concentration of the final diluted solution in mcg/mL? Answer = mcg/mL (1 decimal) b) What volume of the diluted solution is required to prepare 100 mL of a 11 mcg/mL standard solution? Answer = mL (1 decimal) 33

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter12: Spectrochemical Methods

Section: Chapter Questions

Problem 7P

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During an assay of paracetamol by UV an analyst prepares a series of calibration solutions containing approximately 3-15 mcg/mL paracetamol as follows: 140.1 mg of pure paracetamol was added to a 200 mL volumetric flask. 0.1 M NaOH (50 mL) was added, the mixture well shaken and made up to volume with deionized water 10 mL of the above solution was diluted to 100 mL 1)What is the concentration of the final diluted solution in mcg/mL?(1 decimal) 2) What volume of the diluted solution is required to prepare 100 mL of a 8 mcg/mL standard solution? (1 decimal)
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