For H₃PO₄, K_a1 = 7

question 130

Multiple Choice

For H₃PO₄, K_a1 = 7.3 × 10^-3, K_a2 = 6.2 × 10^-6, and K_a3 = 4.8 × 10^-13. A 0.10 M aqueous solution of NaH₂PO₄ therefore would be ________.

• A) neutral
• B) weakly basic
• C) weakly acidic
• D) strongly acidic
• E) strongly basic

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Definitions:

Range of Motion

The full movement potential of a joint, usually its range of flexion and extension.

Muscle Strength

The capacity of a single muscle or a collection of muscles to apply power against a resisting force.

Balance

Consists of mental, physical, emotional, spiritual, and environmental components and is attained when each component reaches a state of equilibrium.

Supination

The rotational movement of the forearm so that the palm faces upwards or forwards.