What Is the Magnitude of the Change in PH When

question 21

Multiple Choice

What is the magnitude of the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH₃CO₂H and 0.100 M NaCH₃CO₂? The K_a for acetic acid is 1.8 × 10^-5.

• A)0.00
• B)0.20
• C)0.47
• D)1.30

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