Which Statement About Buffers Is TRUE

question 2

Multiple Choice

Which statement about buffers is TRUE?

• A) A buffer composed of a weak acid of pK_a = 5 is stronger at pH 4 than at pH 6.
• B) At pH values lower than the pK_a, the salt concentration is higher than that of the acid.
• C) The pH of a buffered solution remains constant no matter how much acid or base is added to the solution.
• D) The strongest buffers are those composed of strong acids and strong bases.
• E) When pH = pK_a, the weak acid and salt concentrations in a buffer are equal.

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