The Weak Acid HA Dissociates with K _a = 1

question 110

Multiple Choice

The weak acid HA dissociates with K _a = 1.0×10 ^{- 4}. The pH of a 0.50 M solution of HA is:

• A) - 0.3
• B) 0.3
• C) 0.65
• D) 1.65
• E) 2.15

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