A Buffer Solution with a PH of 4

question 83

Multiple Choice

A buffer solution with a pH of 4.63 is prepared with 0.14 M formic acid and ________ M sodium formate. The K_a of formic acid is 1.8 × 10^-4.

• A)1.1
• B)2.1
• C)5.4 × 10^-6
• D)3.0 × 10^-8
• E)0.54

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