A Buffer Solution with a PH of 4

question 98

Multiple Choice

A buffer solution with a pH of 4.78 is prepared with ________ M formic acid and 0.90 M sodium formate. The K_a of formic acid is 1.8 × 10^-4.

• A)0.083
• B)0.17
• C)3.3 × 10³
• D)9.8
• E)0.041

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