P A water sample contains NaOH, Na2CO3 and NaHCO3,either alone or in a permissible combination. A 100.0 mLsample is titrated with 19.44 mL of 0.02585 M HCIsolution under phenolphthalein indicator. A second 50.0mL aliquot requires 22.64 mL of the same titrant underthe methyl orange indicator, Determine the type ofspecies found in the sample and calculate theirconcentrations in ppm.

In any acid base reaction there will needed a indicator, which can change its color at the end point…

Answered: the methyl orange indicator, Determine…

the methyl orange indicator, Determine the type of species found in the sample and calculate their concentrations in ppm.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 93QRT: When 40.00 mL of a weak monoprotic acid solution is titrated with 0.100-M NaOH, the equivalence...

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Question

A water sample contains NaOH, Na2CO3 and NaHCO3,
either alone or in a permissible combination. A 100.0 mL
sample is titrated with 19.44 mL of 0.02585 M HCI
solution under phenolphthalein indicator. A second 50.0
mL aliquot requires 22.64 mL of the same titrant under
the methyl orange indicator, Determine the type of
species found in the sample and calculate their
concentrations in ppm.

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When 40.00 mL of a weak monoprotic acid solution is titrated with 0.100-M NaOH, the equivalence point is reached when 35.00 mL base has been added. After 20.00 mL NaOH solution has been added, the titration mixture has a pH of 5.75. Calculate the ionization constant of the acid.
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