Solved: A buffer solution contains 00237 mol sodium dihydrogen, Chemistry

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A buffer solution contains 00237 mol sodium dihydrogen

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A buffer solution contains 0.0237 mol sodium dihydrogen phosphate and 0.0165 mol of sodium hydrogen phosphate in a solution volume of 800. mL. What is the pH after 0.0022 mol HNO₃ is added to the solution?

A) 6.74

B) 6.81

C) 6.94

D) 7.07

E) 7.10

Apparently, the answer is C, 6.94, but I have absolutely no idea as to why.

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Chemistry: A buffer solution contains 00237 mol sodium dihydrogen

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Chemistry: A buffer solution contains 00237 mol sodium dihydrogen

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