What Is K_a for a Weak Monoprotic Acid If a 0.020

question 47

Multiple Choice

What is K_a for a weak monoprotic acid if a 0.020 M solution of the acid has a pH of 3.28 at 25°C?

• A)5.2 × 10^-2
• B)1.4 × 10^-5
• C)7.1 × 10^-2
• D)1.0 × 10^-6
• E)2.8 × 10^-4

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