Which of the Following Has the Highest Buffer Capacity

question 8

Multiple Choice

Which of the following has the highest buffer capacity?

• A) 0.10 M H₂PO₄^-/0.10 M HPO₄^2-
• B) 0.50 M H₂PO₄^-/0.10 M HPO₄^2-
• C) 0.10 M H₂PO₄^-/0.50 M HPO₄^2-
• D) 0.50 M H₂PO₄^-/0.50 M HPO₄^2-
• E) They all have the same buffer capacity.

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Definitions:

Acidic Water

Water with a pH less than 7, indicating it has a higher concentration of hydrogen ions than pure water.

Phosphoglyceride

A type of glycerophospholipid which is a major component of cell membranes, composed of two fatty acids, a glycerol unit, and a phosphate group.

Cephalin

A class of phospholipids found in animal and plant cells, important for the formation of biomembranes and involved in signaling pathways.

Polar Head Group

The part of a molecule (e.g., in a phospholipid) that is hydrophilic due to its electronegativity, leading to interactions with water.