Consider a 1.0-L solution that is 0.480 M HCOOH and 0.83 M NaHCOO at 25 °C....

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Consider a 1.0-L solution that is 0.480 M HCOOH and 0.83 M NaHCOO at 25 °C....

Consider a 1.0-L solution that is 0.480 M HCOOH and 0.83 M NaHCOO at 25 °C. What is the pH of this solution before and after 0.018 moles of HNO₃ have been added? K_a of HCOOH is 1.7E-4

initial pH: 4.01, final pH: 3.56.

initial pH: 4.01, final pH: 3.98.

initial pH: 3.53, final pH: 4.03.

initial pH: 3.53, final pH: 3.51.

initial pH: 3.77, final pH: 4.03.

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Answer 1

Answer #1

- 4 - dog 1.7 pka = -log ka = -log (1.74 10-4) - 3.71 for acidic Butter - pka + log salt & pH = 3.77 + log 0.83 0.43 and - 3.

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Answer 2

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