create a schematic diagram for the provided procedure D. Analysis of unknown sampleNote: Your sample may contain either NaOH only, Na2CO3 only, NaHCO3 only, or anallowed two component combination of any of these three constituents.1. Pipette two 50-mL aliquot of your liquid sample into two Erlenmeyer flasks. Treateachaliquot individually after this point.2. To the first aliquot, add 3 drops of phenolphthalein indicator.3. To the second aliquot, add 3 drops of methyl orange indicator.4. Titrate the first aliquot with standard HCI until the appropriate color change.Compute for the volume of HCl used.5. For the second aliquot, titrate with standard HCl until the color changes. Boil for 2-3mins, and then cool. Titrate again until the appropriate color change.6. From the total volume of HCl used for the titration of the second aliquot, subtract theindicator correction.7. From the true volume of HCI used, determine the constituents and compute for themolarity of each. Perform triplicate analyses. Compute for the mean molarity, SD,and % RSD for the replicate measurements.

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create a schematic diagram for the provided procedure

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter84: Fractional Distillation, Azeotropes

Section: Chapter Questions

Problem 7P

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Question

create a schematic diagram for the provided procedure

D. Analysis of unknown sample
Note: Your sample may contain either NaOH only, Na2CO3 only, NaHCO3 only, or an
allowed two component combination of any of these three constituents.
1. Pipette two 50-mL aliquot of your liquid sample into two Erlenmeyer flasks. Treat
each
aliquot individually after this point.
2. To the first aliquot, add 3 drops of phenolphthalein indicator.
3. To the second aliquot, add 3 drops of methyl orange indicator.
4. Titrate the first aliquot with standard HCI until the appropriate color change.
Compute for the volume of HCl used.
5. For the second aliquot, titrate with standard HCl until the color changes. Boil for 2-3
mins, and then cool. Titrate again until the appropriate color change.
6. From the total volume of HCl used for the titration of the second aliquot, subtract the
indicator correction.
7. From the true volume of HCI used, determine the constituents and compute for the
molarity of each. Perform triplicate analyses. Compute for the mean molarity, SD,
and % RSD for the replicate measurements.

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