You are asked to determine the alkali present and the percentage of each in a component of a sample material containing components of NaOH, Na,CO, and NaHCO, or mixtures of this together with inert material. Each sample being tested weighs 2g and uses 0.25N hydrochloric acid for neutralization. Sample 1: Using phenolphthalein indicator, 48.64ml acid was used. A duplicate sample needed 97.28ml of acid was used with methyl orange indicator. Sample 2: No color change using phenolphthalein as an indicator but with methyl orange 76.94ml acid is required. Sample 3. To cause a color change, the sample was titrated cold with phenolphthalein, 30.58ml of acid is necessary, and an additional 33.19ml was required for complete neutralization

You are asked to determine the alkali present and the percentage of each in a component of a sample material containing components of NaOH, Na,CO, and NaHCO, or mixtures of this together with inert material. Each sample being tested weighs 2g and uses 0.25N hydrochloric acid for neutralization. Sample 1: Using phenolphthalein indicator, 48.64ml acid was used. A duplicate sample needed 97.28ml of acid was used with methyl orange indicator. Sample 2: No color change using phenolphthalein as an indicator but with methyl orange 76.94ml acid is required. Sample 3. To cause a color change, the sample was titrated cold with phenolphthalein, 30.58ml of acid is necessary, and an additional 33.19ml was required for complete neutralization

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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