A 100.0 mL buffer solution is made by combining 0.054 M formic acid (K₁ = 1.8x10-4) and 0.087 M lithium formate. Answer the questions below after 2.1 mmoles (or 2.1x10-³ moles) of NaOH is added. Report all answers with the correct number of significant figures and ENTER UNITS where applicable. How much formic acid remains? How much lithium formate remains? What is the final pH of the solution?

A 100.0 mL buffer solution is made by combining 0.054 M formic acid (K₁ = 1.8x10-4) and 0.087 M lithium formate. Answer the questions below after 2.1 mmoles (or 2.1x10-³ moles) of NaOH is added. Report all answers with the correct number of significant figures and ENTER UNITS where applicable. How much formic acid remains? How much lithium formate remains? What is the final pH of the solution?

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 95AP

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Malic acid (C4H6O5) is one of the alpha hydroxy acid which is naturally found in apples. The reaction of HCl with sodium maleate to form malic acid and sodium chloride is according to the given equation in the pictureYou have been asked to prepare a maleate buffer(Kc=3.908 x 10-4 ) using sodium maleate (M.W=178.05g/mol) and 7.29 x 103 ppm HCl. How many milllilitres of HCl should you add to 250.00mL of 13.4 x 105 ppm sodium maleate to produce a buffer solution with pH of 3.37.
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