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A student used 9.925 x 10-2 mol/L hydrobromic acid to standardize an aqueous solution of potassium hydroxide and obtained the following titration data using phenolphthalein as an indicator: Concentration of HBr used: Volume of HBr used: Indicator: Endpoint colour change: Table 1: Volume of Potassium 9.925 x 10-2 mol/L 25.00 mL phenolphthalein colorless to pale pink Hydroxide Required Trial 1 29.28 1.78 Final reading Initial reading Volume of KOH used (mL) Average of 2 closest values to within 0.10 mL: Burette reading (mL) Trial 2 36.62 9.28 Trial 3 43.98 16.62

A student used 9.925 x 10-2 mol/L hydrobromic acid to standardize an aqueous solution of potassium hydroxide and obtained the following titration data using phenolphthalein as an indicator: Concentration of HBr used: Volume of HBr used: Indicator: Endpoint colour change: Table 1: Volume of Potassium 9.925 x 10-2 mol/L 25.00 mL phenolphthalein colorless to pale pink Hydroxide Required Trial 1 29.28 1.78 Final reading Initial reading Volume of KOH used (mL) Average of 2 closest values to within 0.10 mL: Burette reading (mL) Trial 2 36.62 9.28 Trial 3 43.98 16.62

Chemistry
Chemistry
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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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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How do i determine the ml of KOH? (Picture posted)

A student used 9.925 x 10-2 mol/L hydrobromic acid to standardize an aqueous solution of potassium hydroxide and obtained the following titration data using phenolphthalein as an indicator: 

Concentration of HBr used:                9.925 x 10-2 mol/L

Volume of HBr used:                         25.00 mL

Indicator:                                            phenolphthalein

Endpoint colour change:                     colorless to pale pink

A student used 9.925 x 10-² mol/L hydrobromic acid to standardize an aqueous solution of potassium hydroxide and obtained the following titration data using phenolphthalein as an indicator: Concentration of HBr used: Volume of HBr used: Indicator: Endpoint colour change: 9.925 x 10-2 mol/L 25.00 mL phenolphthalein colorless to pale pink Table 1: Volume of Potassium Hydroxide Required + Trial 1 29.28 1.78 Final reading Initial reading Volume of KOH used (mL) Average of 2 closest values to within 0.10 mL: Burette reading (mL) Trial 2 36.62 9.28 Trial 3 43.98 16.62
Transcribed Image Text:A student used 9.925 x 10-² mol/L hydrobromic acid to standardize an aqueous solution of potassium hydroxide and obtained the following titration data using phenolphthalein as an indicator: Concentration of HBr used: Volume of HBr used: Indicator: Endpoint colour change: 9.925 x 10-2 mol/L 25.00 mL phenolphthalein colorless to pale pink Table 1: Volume of Potassium Hydroxide Required + Trial 1 29.28 1.78 Final reading Initial reading Volume of KOH used (mL) Average of 2 closest values to within 0.10 mL: Burette reading (mL) Trial 2 36.62 9.28 Trial 3 43.98 16.62
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