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What Is the PH of a Buffer Solution That Is KaK _ { a }

Question 31

Multiple Choice

What is the pH of a buffer solution that is 0.251 mol L-1 in lactic acid and 0.151 mol L-1 in sodium lactate? The KaK _ { a } of lactic acid is 1.4 × 10−410 ^ { - 4 } .


A) 12.58
B) 5.28
C) 4.08
D) 10.37
E) 3.63

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