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5. a. A student prepares a dilute solution of sodium hydroxide, NaOH(aq), starting with 6 M so- dium hydroxide. She then titrates a 1.372 g sample of KHP with the dilute sodium hydroxide solution, NaOH(aq), to a phenolphthalein end point. If the titration required 21.84 mL of sodium hydroxide, NaOH(aq), calculate the molar concentration of the sodium hydroxide solution, NaOH(aq). (Remember that KHP is potassium hydrogen phthalate, KHC,H,O, NOT potassium hydrogen phosphorus!) b. The student uses the same sodium hydroxide to titrate 10.00 mL of vinegar to a phenolphtha- lein end point. If the titration required 27.48 mL of sodium hydroxide, NaOH(aq), calculate the molar concentration of acetic acid, HC,H,0,(aq), in the vinegar. Calculate the mass percent of acetic acid, HC,H,0,(aq), in the vinegar using the molar con- C. centration for acetic acid, HC,H,0,(aq), determined in part b and assuming the density of the solution is 1.01 g/mL.

5. a. A student prepares a dilute solution of sodium hydroxide, NaOH(aq), starting with 6 M so- dium hydroxide. She then titrates a 1.372 g sample of KHP with the dilute sodium hydroxide solution, NaOH(aq), to a phenolphthalein end point. If the titration required 21.84 mL of sodium hydroxide, NaOH(aq), calculate the molar concentration of the sodium hydroxide solution, NaOH(aq). (Remember that KHP is potassium hydrogen phthalate, KHC,H,O, NOT potassium hydrogen phosphorus!) b. The student uses the same sodium hydroxide to titrate 10.00 mL of vinegar to a phenolphtha- lein end point. If the titration required 27.48 mL of sodium hydroxide, NaOH(aq), calculate the molar concentration of acetic acid, HC,H,0,(aq), in the vinegar. Calculate the mass percent of acetic acid, HC,H,0,(aq), in the vinegar using the molar con- C. centration for acetic acid, HC,H,0,(aq), determined in part b and assuming the density of the solution is 1.01 g/mL.

Chemistry
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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5. a. A student prepares a dilute solution of sodium hydroxide, NaOH(aq), starting with 6 M so- dium hydroxide. She then titrates a 1.372 g sample of KHP with the dilute sodium hydroxide solution, NaOH(aq), to a phenolphthalein end point. If the titration required 21.84 mL of sodium hydroxide, NaOH(aq), calculate the molar concentration of the sodium hydroxide solution, NaOH(aq). (Remember that KHP is potassium hydrogen phthalate, KHC,H,O, NOT potassium hydrogen phosphorus!) b. The student uses the same sodium hydroxide to titrate 10.00 mL of vinegar to a phenolphtha- lein end point. If the titration required 27.48 mL of sodium hydroxide, NaOH(aq), calculate the molar concentration of acetic acid, HC,H,0,(aq), in the vinegar. Calculate the mass percent of acetic acid, HC,H,0,(aq), in the vinegar using the molar con- C. centration for acetic acid, HC,H,0,(aq), determined in part b and assuming the density of the solution is 1.01 g/mL.
Transcribed Image Text:5. a. A student prepares a dilute solution of sodium hydroxide, NaOH(aq), starting with 6 M so- dium hydroxide. She then titrates a 1.372 g sample of KHP with the dilute sodium hydroxide solution, NaOH(aq), to a phenolphthalein end point. If the titration required 21.84 mL of sodium hydroxide, NaOH(aq), calculate the molar concentration of the sodium hydroxide solution, NaOH(aq). (Remember that KHP is potassium hydrogen phthalate, KHC,H,O, NOT potassium hydrogen phosphorus!) b. The student uses the same sodium hydroxide to titrate 10.00 mL of vinegar to a phenolphtha- lein end point. If the titration required 27.48 mL of sodium hydroxide, NaOH(aq), calculate the molar concentration of acetic acid, HC,H,0,(aq), in the vinegar. Calculate the mass percent of acetic acid, HC,H,0,(aq), in the vinegar using the molar con- C. centration for acetic acid, HC,H,0,(aq), determined in part b and assuming the density of the solution is 1.01 g/mL.
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