Current Attempt in ProgressA chemist needed an aqueous buffer with a pH of 3.90.Part aYour answer is correct.Would formic acid and its salt, sodium formate, make a good pair for this purpose?Formic acid and its salt, sodium formate would make a good pair for this purpose.Formic acid and its salt, sodium formate would not make a good pair for this purpose.eTextbook and MediaAttempts: 1 of 15 usedPart bYour answer is correct.What mole ratio of the acid, HCHO2, to the anion of this salt, CHO2", is needed?mol HCHO, initial0.70mol CHO2 initialHintAttempts: 1 of 15 usedPart cYour answer is incorrect.How many grams of NaCHO, would have to be added to a solution that contains 0.27 mol HCHO,?m(NACHO2) =

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Answered: Part c Your answer is incorrect. How…

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Part c Your answer is incorrect. How many grams of NaCHO2 would have to be ad m(NACHO2) =

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 107QRT

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Question

Current Attempt in Progress
A chemist needed an aqueous buffer with a pH of 3.90.
Part a
Your answer is correct.
Would formic acid and its salt, sodium formate, make a good pair for this purpose?
Formic acid and its salt, sodium formate would make a good pair for this purpose.
Formic acid and its salt, sodium formate would not make a good pair for this purpose.
eTextbook and Media
Attempts: 1 of 15 used
Part b
Your answer is correct.
What mole ratio of the acid, HCHO2, to the anion of this salt, CHO2", is needed?
mol HCHO, initial
0.70
mol CHO2 initial
Hint
Attempts: 1 of 15 used
Part c
Your answer is incorrect.
How many grams of NaCHO, would have to be added to a solution that contains 0.27 mol HCHO,?
m(NACHO2) =

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