An analytical chemist is titrating 144.5 mL of a 0.8200M solution of benzoic acid (HC H₂CO₂) with a 0.8500M solution of NaOH. The p K of benzoic acid is 4.20. Calculate the pH of the acid solution after the chemist has added 110.8 mL of the NaOH solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of NaOH solution added. Round your answer to 2 decimal places. pH = X

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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An analytical chemist is titrating 144.5 mL of a 0.8200 M solution of benzoic acid \((HC_6H_5CO_2)\) with a 0.8500 M solution of NaOH. The \(pK_a\) of benzoic acid is 4.20. Calculate the pH of the acid solution after the chemist has added 110.8 mL of the NaOH solution to it.

*Note for advanced students:* you may assume the final volume equals the initial volume of the solution plus the volume of NaOH solution added.

Round your answer to 2 decimal places.

\[ \text{pH} = \boxed{\phantom{0}} \]

[The interface shows a box for input, a cancel button, and a reset button.]
Transcribed Image Text:An analytical chemist is titrating 144.5 mL of a 0.8200 M solution of benzoic acid \((HC_6H_5CO_2)\) with a 0.8500 M solution of NaOH. The \(pK_a\) of benzoic acid is 4.20. Calculate the pH of the acid solution after the chemist has added 110.8 mL of the NaOH solution to it. *Note for advanced students:* you may assume the final volume equals the initial volume of the solution plus the volume of NaOH solution added. Round your answer to 2 decimal places. \[ \text{pH} = \boxed{\phantom{0}} \] [The interface shows a box for input, a cancel button, and a reset button.]
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