To create a buffer solution, 40.00mL of a 0.100M benzoic acid (Bz) solution are mixed with 20.00mL of 0.100M sodium hydroxide solution. What is the pH of the resulting solution if the Ka of benzoic acid 6.5 x10 -5 and the pKa = 4.19? (Use the Henderson Hasselbach Equation with mmol).Reaction:HOBz + OH- ---> H2O + OBz- From the buffer solution above, youo take a 10.00mL portion of the buffer. Using all of the information provided, how much conjugate acid and conjugate base are in the 10.00mL portion that you took out?Group of answer choices0.167mmol0.500mmol0.222mmol0.333mmol

This means potential of hydrogen and to calculate this we have to know the negative logarithmic…

Answered: To create a buffer solution, 40.00mL of…

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

Problem 57P

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To create a buffer solution, 40.00mL of a 0.100M benzoic acid (Bz) solution are mixed with 20.00mL of 0.100M sodium hydroxide solution. What is the pH of the resulting solution if the K_a of benzoic acid 6.5 x10 ^-5 and the pK_a = 4.19? (Use the Henderson Hasselbach Equation with mmol).

Reaction:

HOBz + OH^- ---> H₂O + OBz^-

From the buffer solution above, youo take a 10.00mL portion of the buffer. Using all of the information provided, how much conjugate acid and conjugate base are in the 10.00mL portion that you took out?

Group of answer choices

0.167mmol

0.500mmol

0.222mmol

0.333mmol

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