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What Is the PH of a Buffer That Results When

Question 27

Multiple Choice

What is the pH of a buffer that results when 0.40 mol NaHCO2 is mixed with 100.0 mL of 2.00 M HCl(aq) and diluted with water to 250 mL? (Ka of HCO2H = 1.8 × 10-4)


A) −0.301
B) 3.05
C) 3.44
D) 3.74
E) 4.05

Correct Answer:

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