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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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