Which of the Following Expressions for K Is Correct for the Reaction

question 35

Multiple Choice

Which of the following expressions for K is correct for the reaction given below?
HF(aq) + H₂O( $\ell$ ) $\rightleftharpoons$ F^-(aq) + H₃O⁺(aq)

• A) \(K = \frac { [ \mathrm { HF } ] } { \left[ \mathrm { F } ^ { - } \right] }\)
• B) \(K = \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right]\)
• C) \(K = \frac { \left[ \mathrm { F } ^ { - } \right] \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right] } { [ \mathrm { HF } ] }\)
• D) \(K = \frac { \left[ \mathrm { F } ^ { - } \right] } { [ \mathrm { HF } ] }\)
• E) \(K = \frac { [ \mathrm { HF } ] } { \left[ \mathrm { F } ^ { - } \right] \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right] }\)

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Definitions:

Expectancy Theory

A theory in psychology that proposes an individual's motivation is related to their expected outcomes of a behavior and the value they place on those outcomes.

External Locus of Control

A psychological concept suggesting that individuals believe external forces or circumstances primarily determine their life events and outcomes.

Situational

Related to or dependent on a particular set of circumstances or context.

Dispositional

Relating to the inherent qualities, traits, or tendencies that contribute to a person's enduring behavior patterns or characteristics.