The K_a of Some Acid,HA,at 25

question 13

Multiple Choice

The K_a of some acid,HA,at 25.0 °C is 4.9 × .What is the pH of a 0.050 M aqueous solution of A^-?

• A)1.0 × 10^-3
• B)3.00
• C)11.00
• D)9.9 × 10^-12
• E)2.5 × 10^-11

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