A Buffer Is 0

question 23

Multiple Choice

A buffer is 0.282 M C₆H₅COOH(aq) and 0.282 M C₆H₅COONa(aq) .Calculate the pH after the addition of 0.150 moles of nitric acid to 1.0 L of the buffer.For C₆H₅COOH,pK_a = 4.20.

• A)3.69
• B)4.20
• C)4.71
• D)3.87
• E)7.00

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