A Rate Constant Is

question 67

Multiple Choice

A rate constant is

• A) the rate of a reaction at standard temperature and pressure.
• B) the rate of a reaction at equilibrium.
• C) a proportionality constant relating the rate of a reaction to the concentration(s) of the reactant(s).
• D) a kind of transition state.

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Definitions:

Absolute Threshold

Absolute threshold is the minimum intensity of a stimulus that one can perceive 50% of the time, marking the boundary at which a stimulus becomes detectable to the senses.

Subliminal Threshold

The level below which a stimulus is not strong enough to be perceived or consciously noticed, yet may influence behavior or cognition.

Adaptation Threshold

The point at which a stimulus is of sufficient intensity to begin to produce an effect or be noticed.

Difference Threshold

The smallest amount of change needed in a stimulus for it to be detected as noticeably different from a reference stimulus.