For a Weak Acid with a PK_a = 6

question 35

Multiple Choice

For a weak acid with a pK_a = 6.5, the effective buffering range is usually considered to be

• A) pH 6 to pH 7.
• B) pH 6.4 to pH 6.6.
• C) pH 5.5 to pH 7.5.
• D) dependent on the molarity of the acid.
• E) B and C

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