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? (K_a of HCO₂H = 1.8 × 10^-4)

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

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