When an Acid, HA, Is Titrated with 0

question 104

Multiple Choice

When an acid, HA, is titrated with 0.1 M NaOH, the pH at the half equivalence point of the titration is 4.5. What is the K_a of the acid?

• A) 3.2 x 10^-5
• B) 3.2 x 10^-10
• C) 1.8 x 10^-3
• D) 7.0 x 10^-7
• E) HA is a strong acid

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