e); Watch What mass of sodium benzoate should you add to 142.0 mL of a 0.13 M benzoic acid (HC7H5O2) solution to obtain a buffer with a pH of 4.30? (Ka (HC7H5O2) = 6.5 x 10-5.) Express your answer in grams to two significant figures. ΜΕ ΑΣΦ ? m = Submit Request Answer g

e); Watch What mass of sodium benzoate should you add to 142.0 mL of a 0.13 M benzoic acid (HC7H5O2) solution to obtain a buffer with a pH of 4.30? (Ka (HC7H5O2) = 6.5 x 10-5.) Express your answer in grams to two significant figures. ΜΕ ΑΣΦ ? m = Submit Request Answer g

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 16.52QE

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Question

e); Watch
What mass of sodium benzoate should you add to 142.0 mL of a 0.13 M benzoic acid (HC7H5O2) solution to obtain
a buffer with a pH of 4.30? (Ka (HC7H5O2) = 6.5 x 10-5.)
Express your answer in grams to two significant figures.
ΜΕ ΑΣΦ
?
m =
Submit
Request Answer
g

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