All of the Following Statements Concerning Acid-Base Buffers Are True

question 77

Multiple Choice

All of the following statements concerning acid-base buffers are true EXCEPT

• A) buffers are resistant to pH changes upon addition of small quantities of strong acids or bases.
• B) buffers are used as colored indicators in acid-base titrations.
• C) the pH of a buffer is close to the pK_a of the weak acid from which it is made.
• D) buffers contain appreciable quantities of a weak acid and its conjugate base.
• E) buffers are resistant to changes in pH when diluted with water.

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Definitions:

Sigma Bonding

A type of covalent bond where electrons are shared in an area directly between atoms, involving the overlap of atomic orbitals.

Molecular Orbital

A region in a molecule where an electron is likely to be found, described by a mathematical function reflecting the wave-like properties of electrons.

Cylindrically Symmetric

Refers to objects or systems that have rotational symmetry about a central axis, maintaining the same dimensions in a circular pattern around the axis.

Molecular Orbital

A mathematical function describing the wave-like behavior of an electron in a molecule.