A 010 M Solution of a Weak Monoprotic Acid Has a a Hydronium-Ion

question 38

Multiple Choice

A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 8.0 × 10^-4 M.What is the acid-ionization constant,K_a,for this acid?

• A) 2.8 × 10^-2
• B) 7.5 × 10^-3
• C) 8.0 × 10^-4
• D) 6.4 × 10^-6
• E) 9.6 × 10^-5

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Definitions:

Lipid Bilayer

A thin polar membrane made of two layers of lipid molecules, fundamental to the structure of cell membranes.

Hydrophobic

Describing molecules or substances that do not mix with or repel water.

Saturated Fat

A type of fat molecule that contains no double bonds between carbon atoms, typically solid at room temperature and found in animal products and some plant oils.

Food Item

An individual substance that is consumed as nourishment or part of a meal.