A 25.00-mL solution containing NaOH, Na2CO3, and NaHCO3 alone or in compatible combination was titrated with 0.0998 M HCl using phenolphthalein as indicator. The solution turned colourless after addition of 25.65 mL of HCl. Methyl orange was then added to the solution and an additional 6.95 mL of the acid was needed to change the colour of the indicator. Identify the components in the mixture and calculate the concentration of each in milligrams per millilitre of solution.

A 25.00-mL solution containing NaOH, Na2CO3, and NaHCO3 alone or in compatible combination was titrated with 0.0998 M HCl using phenolphthalein as indicator. The solution turned colourless after addition of 25.65 mL of HCl. Methyl orange was then added to the solution and an additional 6.95 mL of the acid was needed to change the colour of the indicator. Identify the components in the mixture and calculate the concentration of each in milligrams per millilitre of solution.

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter15: Equilibria Of Other Reaction Classes

Section: Chapter Questions

Problem 82E: The simplest amino acid is glycine, H2NCH2CO2H. The common feature of amino acids is that they...

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