The Standard Free Energy Change Associated with the Dissolution of Ammonium

question 35

Multiple Choice

The standard free energy change associated with the dissolution of ammonium nitrate in water is -6.73 kJ/mol at 298.15 K. NH₄NO₃(s) $\leftrightharpoons$ NH₄NO₃(aq)
Which of the following is the equilibrium constant for the reaction? (R = 8.314 J/K?mol)

• A) 1.9 × 10^-3
• B) 6.6 × 10^-2
• C) 1.0
• D) 15
• E) 5.2 × 10²

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Definitions:

Mirror Neurons

Neurons that fire both when an individual performs an action and when they observe the same action performed by another, thought to be involved in empathy, learning by imitation, and understanding others’ actions.

Frontal Lobe

The part of the brain located at the front of each cerebral hemisphere, responsible for voluntary movement, expressive language, and managing executive functions.

Motor Cortex

An area at the rear of the frontal lobes that controls voluntary movements.

Modeling

In learning theory, the process of acquiring new behaviors, attitudes, or skills by observing and imitating others.