If a Buffer Is Made Up Using 1

question 32

Multiple Choice

If a buffer is made up using 1.00 mole of a weak acid (pK_a = 5.00) and 0.90 mole of its conjugate base, which of the following must be true?

• A) pH < 5.00
• B) pH = 5.00
• C) pH > 5.00
• D) pH = 7.00
• E) pH > 7.00

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Definitions:

Millivolts

A unit of electric potential equal to one thousandth of a volt, commonly used to measure electrical potential differences.

Action Potential

A temporary reversal of the electric membrane potential of a cell, especially nerve cells, allowing for the transmission of nerve impulses.

Resting Potential

The electrical potential of a neuron when it is not active, representing the difference in charge between the inside and outside of the cell.

Axon Terminal

Bulbous end of the axon where signals move from the axon of one neuron to the dendrites or cell body of another.