Which of the Following Is TRUE

question 168

Multiple Choice

Which of the following is TRUE?

• A) An effective buffer has a [base]/[acid] ratio in the range of 10-100.
• B) A buffer is most resistant to pH change when [acid] = [conjugate base].
• C) An effective buffer has very small absolute concentrations of acid and conjugate base.
• D) The capacity of a buffer cannot be exceeded by adding too much strong base. It can only be exceeded by adding too much strong acid.
• E) A buffer has the best resistance to pH change when the buffer's pH is significantly lower than the pK_a of the acid used to make the buffer solution.

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Definitions:

Combining Form

In linguistics, especially in the formation of compound words, a form of a word that is used in combination with another word to create a new meaning.

Latin

An ancient Italic language of the Roman Empire, used as the language of scholarship and administration until superseded by vernacular languages but surviving today in certain ecclesiastical and academic contexts.

Greek

Relating to Greece, its people, or their language.

Cyan/o

A prefix in medical terminology denoting the color blue, often used to describe conditions related to inadequate oxygen levels in the blood.