0.02000 M NaOH to reach the equivalence point. What is the concentration of unknown HNO3 solution? 2) A 15.0 mL sample of 1.78 x 10-3 M Ca(OH)2 is being titrated against 2 M HCI. Determine the volume of HCl needed to reach the equivalence 3) A 30.00 mL sample of unknown concentration of H3PO4 solution is titr 0.100 M Ba(OH)2 solution. The equivalence point is reached when 26.. Ba(OH)2 solution is added. What is the concentration of the unknown H solution? 4) A 35.0 mL sample of 1.78 x 10² M H2C,O4 is being titrated against 2.1 HBr. Determine the volume of HBr needed to reach the equivalence po 5) Acetylsalicylic acid (HC,H;O4) is a monoprotic acid commonly known "aspirin". A typical aspirin tablet, however, contains only a small amou acid. In an experiment to determine its composition, an aspirin tablet w and dissolved in water. It took 12.25 mL of 0.1466 M NaOH to neutral solution. Calculate the number of grains of aspirin in the tablet (one gra 0.0648 g). (assume acid:base ratio is 1:1).
0.02000 M NaOH to reach the equivalence point. What is the concentration of unknown HNO3 solution? 2) A 15.0 mL sample of 1.78 x 10-3 M Ca(OH)2 is being titrated against 2 M HCI. Determine the volume of HCl needed to reach the equivalence 3) A 30.00 mL sample of unknown concentration of H3PO4 solution is titr 0.100 M Ba(OH)2 solution. The equivalence point is reached when 26.. Ba(OH)2 solution is added. What is the concentration of the unknown H solution? 4) A 35.0 mL sample of 1.78 x 10² M H2C,O4 is being titrated against 2.1 HBr. Determine the volume of HBr needed to reach the equivalence po 5) Acetylsalicylic acid (HC,H;O4) is a monoprotic acid commonly known "aspirin". A typical aspirin tablet, however, contains only a small amou acid. In an experiment to determine its composition, an aspirin tablet w and dissolved in water. It took 12.25 mL of 0.1466 M NaOH to neutral solution. Calculate the number of grains of aspirin in the tablet (one gra 0.0648 g). (assume acid:base ratio is 1:1).
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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Transcribed Image Text:Challenge problems
1) A 25.00 mL sample of unknown concentration of HNO3 solution requires 22.62 mL of
0.02000 M NaOH to reach the equivalence point. What is the concentration of the
unknown HNO3 solution?
2) A 15.0 mL sample of 1.78 x 10-3 M Ca(OH)2 is being titrated against 2.18 x 10*
M HCl. Determine the volume of HCl needed to reach the equivalence point.
3) A 30.00 mL sample of unknown concentration of H3PO4 solution is titrated with
0.100 M Ba(OH)2 solution. The equivalence point is reached when 26.38 mL of
Ba(OH)2 solution is added. What is the concentration of the unknown H3PO4
solution?
4) A 35.0 mL sample of 1.78 x 10² M H2C2O4 is being titrated against 2.18 x 102 M
HBr. Determine the volume of HBr needed to reach the equivalence point.
5) Acetylsalicylic acid (HC,H;O4) is a monoprotic acid commonly known as
"aspirin". A typical aspirin tablet, however, contains only a small amount of the
acid. In an experiment to determine its composition, an aspirin tablet was crushed
and dissolved in water. It took 12.25 mL of 0.1466 M NaOH to neutralize the
solution. Calculate the number of grains of aspirin in the tablet (one grain
0.0648 g). (assume acid:base ratio is 1:1).
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