A Buffer Is Prepared by Adding 300

question 57

Multiple Choice

A buffer is prepared by adding 300.0 mL of 2.0 M NaOH to 500.0 mL of 2.0 M CH₃COOH. What is the pH of this buffer? K_a = 1.8 × 10⁻⁵

• A)4.57
• B)4.52
• C)4.87
• D)4.92
• E)4.97

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Definitions:

Cytoplasmic Components

Elements found within the cytoplasm of a cell that include organelles, cytoskeleton, and various molecules essential for cellular functions.

Nuclear Proteins

Nuclear proteins are a diverse group of molecules found within the cell nucleus, playing roles in DNA replication, repair, and gene expression regulation.

Holocrine

A mode of secretion in which the entire cell becomes filled with secretory products and then disintegrates, releasing the contents into the duct system.

Pleura

A double-layered membrane surrounding each lung, providing lubrication and facilitating breathing.