Substance X Has a Heat of Vaporization of 55

question 26

Multiple Choice

Substance X has a heat of vaporization of 55.4 kJ/mol at its normal boiling point (423°C) . For the process X(l)  X(g) at 1 atm and 423°C, calculate the value of:
-G

• A) 79.6 J/K•mol
• B) -79.6 J/K•mol
• C) 0
• D) 103 J/K•mol
• E) -103 J/K•mol

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Definitions:

Stimulus Substitution

A theory in classical conditioning suggesting that the conditioned stimulus acts as a substitute for the unconditioned stimulus, eliciting the same response.

Classical Conditioning

An educational mechanism where the consistent pairing of two stimuli occurs; the response which initially is drawn by the second stimulus, in time, is drawn by the first stimulus alone.

Conditioned Stimulus

A previously neutral stimulus that, after being repeatedly associated with an unconditioned stimulus, evokes a conditioned response.

Conditioned Fear

A learned response to a previously neutral stimulus that has become associated with a frightful event or situation.