Use a primary standard to determine an unknown concentration using an acid-base titration. Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has ths unwieldy formula of KHC3H,O4. This is often written in shorthand notation as KHP. If 34.47 mL of a barium hydroxide solution are needed to neutralize 1.279 grams of KHP, what is the concentration (mol/L) of the barium hydroxide solution? M
Use a primary standard to determine an unknown concentration using an acid-base titration. Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has ths unwieldy formula of KHC3H,O4. This is often written in shorthand notation as KHP. If 34.47 mL of a barium hydroxide solution are needed to neutralize 1.279 grams of KHP, what is the concentration (mol/L) of the barium hydroxide solution? M
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.103QE: A bottle of concentrated hydroiodic acid is 57% HI by weight and has a density of 1.70 g/mL. A...
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Transcribed Image Text:Use a primary standard to determine an unknown concentration using an acid-base titration.
Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has ths unwieldy
formula of KHC3H,O. This is often written in shorthand notation as KHP.
If 34.47 mL of a barium hydroxide solution are needed to neutralize 1.279 grams of KHP, what is the concentration (mol/L) of the
barium hydroxide solution?
M
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Expert Solution
Step 1
When KHP and barium hydroxide react with each other,then Following balanced Chemical Reaction obtained -
Ba(OH)2 + 2KHC8H4O4 → BaK2(C8H4O4)2 + 2H2O
Here, one mole of barium hydroxide needed by two moles of KHP. Molar mass of Ba(OH)2 is 171.34 g/mol , and of KHP is 204.44 g/mol. Then, 1.279 g KHP needed -
(1.279/2×204.44)×171.34 = 0.53596 gram barium hydroxide.
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