Question 15Which of the following combination can be used to prepare a buffer with a pH of 7?NaHCO3 and NazCO3 (Ka= 6.3096 x 10-11)NaH2PO4 and Na2HPO4 (Ka= 6.1660 x 10-8)K2HPO4 and K3PO4 (Ka= 5.0119 x 10-13)H3PO4 and NaH2PO4 (Ka= 7.5858 x 10-3)

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Which of the following combination can be used to prepare a buffer with a pH of 7? са NaHCOз and NazCOgз (Ка- 6.3096 х 10-:11) NaH2PO4 and NazHРОД (Ка- 6.1660 х 10-8, КаHРОд аnd K3PO4 (Ка- 5.0119 х 10-13) НзРОд and NaHzРОд (Ка-D 7.5858 х 10-3

Which of the following combination can be used to prepare a buffer with a pH of 7? са NaHCOз and NazCOgз (Ка- 6.3096 х 10-:11) NaH2PO4 and NazHРОД (Ка- 6.1660 х 10-8, КаHРОд аnd K3PO4 (Ка- 5.0119 х 10-13) НзРОд and NaHzРОд (Ка-D 7.5858 х 10-3

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter25: Ph Measurements-buffers And Their Properties

Section: Chapter Questions

Problem 5ASA

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

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