Which of the Following Species Does Not Have a Standard

question 25

Multiple Choice

Which of the following species does not have a standard enthalpy of formation equal to zero at 25°C?

• A)Cl₂(l)
• B)N₂(g)
• C)Fe(s)
• D)H⁺(aq)
• E)S₈(s)

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Definitions:

Feared Stimulus

An object, event, or situation that induces fear through conditioning or innate phobias.

Avoidance Behavior

Actions taken to prevent or evade a negative or undesirable outcome or stimulus.

Escape Behavior

A response designed to avoid an unpleasant situation or outcome, often seen in the context of avoiding negative reinforcement.

Two-Factor Theory

A psychological theory that proposes emotions are based on physiological arousal and cognitive labeling of that arousal.