Which of the Following Substances Would Be Expected to Have

question 63

Multiple Choice

Which of the following substances would be expected to have an enthalpy of formation value D H f equal to zero?
(Pay careful attention to the phase indicators.)
I. O₂(g)
II. N₂( )
III. H₂ O ( )

• A) I only
• B) I and II
• C) I and III
• D) II and III
• E) All of these

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Definitions:

Pessimist

An individual who tends to see the worst aspect of things or believe that the worst will happen; a lack of hope or confidence in the future.

Thwarted Need

A desire or requirement that has been prevented from being achieved or satisfied.

Power Motive

Wanting to have an impact on others.

Power Motive

The drive to influence, control, or have an impact on others, often studied in the context of personality and social psychology.