A Buffer Is 0

question 36

Multiple Choice

A buffer is 0.282 M C₆H₅COOH(aq) and 0.282 M Na(C₆H₅COO) (aq) . Calculate the pH after the addition of 0.150 moles of nitric acid to 1.0 L of the buffer. For C₆H₅COOH, pKa = 4.20.

• A) 3.69
• B) 4.20
• C) 4.71
• D) 3.87

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