How Many Moles of Sodium Acetate Must Be Added to 500.0

question 64

Multiple Choice

How many moles of sodium acetate must be added to 500.0 mL of 0.250 M acetic acid solution to produce a solution with a pH of 4.94? (The pK_a of acetic acid is 4.74.)

• A)0.011 moles
• B)0.021 moles
• C)0.13 moles
• D)0.20 moles
• E)0.21 moles

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Definitions:

NADH

Nicotinamide adenine dinucleotide (NADH) is a coenzyme involved in redox reactions, carrying electrons from one reaction to another in cellular respiration.

FADH2

A reduced form of flavin adenine dinucleotide, a molecule that plays a crucial role in cellular respiration by transporting electrons.

Glycolysis

A metabolic pathway that breaks down glucose into pyruvate, releasing energy and pyruvic acid in the process, occurring in the cytoplasm of cells.

ATP

Adenosine triphosphate. Nucleotide that consists of an adenine base, a ribose sugar, and three phosphate groups. Functions as a subunit of RNA and as a coenzyme in many reactions. Important energy carrier.