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# What is the pH difference between a buffer solution (Solution A) of 0.95 M HCOOH and...

What is the pH difference between a buffer solution (Solution A) of 0.95 M HCOOH and 1.22 M HCOO and a buffer solution (Solution B) of 0.95 M HCOOH and 3.75 M HCOO? Assume that 0.10 M of NaOH, a strong base, is added to both buffer solutions and that Ka = 1.77 × 10−4.

 0.47 0.95 1.14 3.94

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