0.0703 mol of the weak acid HBarb are dissolved in 325 mL of water. The pH of the solution is 2.34. What is the Ka of HBarb? You may assume that the acid is weak enough that the initial number of moles of HBarb remains unchanged. Enter your answer to two signficant figures.

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
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0.0703 mol of the weak acid HBarb are dissolved in 325 mL of water. The pH of the solution is 2.34. What is the Ka of HBarb? You may assume that the acid is weak enough that the initial number of moles of HBarb remains unchanged. Enter your answer to two signficant figures.

 

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