The Fluoride Ion, F-, Reacts with Water as a Weak $\degree$

question 92

Multiple Choice

The fluoride ion, F-, reacts with water as a weak base: F^-(aq) + H₂ O(l) ⇄ HF(aq) + OH^-(aq) , with K = 1.5 * 10^-11 at 25 $\degree$
C.If sodium fluoride were dissolved in water to make a 0.150 M solution, what would be the resulting concentration of OH^-?

• A)0.15 M
• B)1.5 * 10^-6 M
• C)1.1 * 10^-12 M
• D)5.8* 10^-7 M
• E)2.3 * 10^-12 M

Recognize the conditions necessary for the establishment and maintenance of liberal democracy.

Comprehend the characteristics and differences between authoritarian, totalitarian, and democratic states.

Discuss the concept of power legitimacy and the process of its institutionalization.

Explore the concept of public opinion and its expression in democratic societies.

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Definitions:

Depolarization

A reduction in the difference of electric potential across a cell membrane, leading to the possibility of producing an action potential.

Repolarization

The process by which cells restore their resting negative membrane potential after depolarization.

Cardiac Muscle Cells

Specialized muscle cells found in the heart that contract rhythmically and involuntarily to pump blood throughout the body.

Capillary Network

A complex intertwining of capillaries supplying organs and tissues with nutrients and oxygen and removing waste products.