What Is the [H₂PO₄^-] of a Solution Labeled "0

question 49

Multiple Choice

What is the [H₂PO₄^-] of a solution labeled "0.10 M Phosphoric Acid"? [Ka1 = 7.1 × 10^-3; Ka2 = 6.3 × 10^-8; Ka3 = 4.2 × 10^-13]

• A) 0.023 M
• B) 6.3 × 10^-8 M
• C) 7.1 × 10^-3 M
• D) 4.2 × 10^-13 M
• E) 0.013 M

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Definitions:

Cochlea

A spiral-shaped cavity of the inner ear that plays a key role in the sense of hearing by converting sound waves into nerve impulses.

Joints

Points where two bones meet, allowing for movement and mechanical support.

Semi-circular Canals

Three fluid-filled bony channels in the inner ear that are involved in maintaining balance and sensing rotational movements.

Balance

The state of having equal distribution of weight enabling someone or something to remain upright and steady.