A Buffer Is 0

question 23

Multiple Choice

A buffer is 0.282 M C₆H₅COOH(aq) and 0.282 M C₆H₅COONa(aq) .Calculate the pH after the addition of 0.150 moles of nitric acid to 1.0 L of the buffer.For C₆H₅COOH,pK_a = 4.20.

• A)3.69
• B)4.20
• C)4.71
• D)3.87
• E)7.00

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Definitions:

Cytoplasm

The jelly-like substance inside cells that contains organelles and is enclosed by the cell membrane.

Protein Synthesis

The biological process by which cells build proteins based on the genetic instructions encoded in DNA.

Genetic Information

Data about an individual's genes and chromosomal setup, including traits inherited from parents.

Nucleus

An organelle found in eukaryotic cells responsible for containing most of the cell's genetic material.