What Is the PH of a Buffer That Consists of 0.20

question 47

Multiple Choice

What is the pH of a buffer that consists of 0.20 M NaH₂PO₄ and 0.40 M Na₂HPO₄? For NaH₂PO₄, K_a = 6.2*10¯⁸

• A) 6.51
• B) 6.91
• C) 7.51
• D) 7.90
• E) 8.13

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Definitions:

Central Nervous System

Part of the nervous system consisting of the brain and spinal cord, responsible for processing and sending out information.

Activities

Tasks or actions that are undertaken for various purposes such as leisure, learning, or physical exercise.

Autonomic Nervous System

This system manages involuntary physiological functions including heart rate, digestion, and respiratory rate, operating below the level of consciousness.

Body Temperature

The measure of the body's ability to generate and get rid of heat, vital for the proper functional regulation of the human body.