Two aliquot of a water sample is titrated against a strong acid using phenolphthalein and bromocresol green indicator. The volume for the bromocresol green endpoint is 18.7 mL and for phenolphthalein endpoint is 18.7 mL, what is/are the probable source of alkalinity? Section а. OH- b. OH and CO,- с. СО, d. HCO; 2-

Two aliquot of a water sample is titrated against a strong acid using phenolphthalein and bromocresol green indicator. The volume for the bromocresol green endpoint is 18.7 mL and for phenolphthalein endpoint is 18.7 mL, what is/are the probable source of alkalinity? Section а. OH- b. OH and CO,- с. СО, d. HCO; 2-

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter16: Applications Of Neutralization Titrations

Section: Chapter Questions

Problem 16.40QAP

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The first step in purifying the urine collected on the ISS is to treat every liter of urine with 20 mL of 1.0 M H2SO4. To simplify the calculations, lets assume that urine is water. a) What is the pH of a solution of 20. mL of 1.0 M H2SO4 added to 1.00 L water? To determine this, you can safely assume that 100% of the H2SO4 reacts to form H3O+ and HSO4- ions. Use pKa2 (1.92) to determine if any more protons are added to the solution from HSO4-.
Two aliquot of a water sample is titrated against a strong acid using phenolphthalein and bromocresol green indicator. The volume for the bromocresol green endpoint is 13.5 mL and there was no apparent phenolphthalein endpoint, what is/are the probable source of alkalinity A. OH⁻ and CO₃²⁻ B. CO₃²⁻ C. OH⁻ D. HCO₃⁻
Two aliquot of a water sample is titrated against a strong acid using phenolphthalein and bromocresol green indicator. The volume for the phenolphthalein endpoint and for the bromocresol green endpoint are equal, what is/are the probable source of alkalinity? a) Hydroxide b) Bicarbonate c) Carbonate d) Both Hydroxide and Carbonate In addition, what would be the probable source of alkalinity if the volume for bromocresol green endpoint is 13.5mL and there was no phenolphthalein endpoint?
An alkaline sample of sodium compounds weighing 1.196 g was dissolved in water, cooled at 15 deg C, treated with 2 drops of phenolphthalein indicator and titrated with 1.058 N H2SO4 requiring 6.8 mL to render the solution colorless. Upon adding 2 drops of methyl orange and continuing the titration 16.5 mL more of the acid was needed to complete analysis. What is the quantitative composition of the sample?
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Two aliquot of a water sample is titrated against a strong acid using phenolphthalein and bromocresol green indicator. The volume for the phenolphthalein endpoint and for the bromocresol green endpoint are equal, what is/are the probable source of alkalinity A. OH⁻ B. CO₃²⁻ C. OH⁻ and CO₃²⁻ D. HCO₃⁻
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