A Certain Acid,HA,has a K_a Given By

question 5

Multiple Choice

A certain acid,HA,has a K_a given by:
HA + H₂O ⇌ H₃O⁺ + A^- K_a = 6.80 × 10^-6
What is the pH of a 0.247 M aqueous solution of the acid's potassium salt,KA,which undergoes the hydrolysis reaction?
A^- + H₂O ⇌ OH^- + HA

• A)4.72
• B)9.28
• C)4.11
• D)9.89
• E)9.44

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