Determine the Standard Enthalpy of Formation for NO Given the Following

question 115

Multiple Choice

Determine the standard enthalpy of formation for NO given the following information about the formation of NO₂ under standard conditions, and $\Delta$ H ${ } _ { f } ^ { \circ } \mathrm { }$ (NO₂) = + 33.2 kJ/mol.
2NO(g) + O₂(g) $\rightarrow$ 2NO₂(g) $\Delta$ H_rxn = -114.2 kJ

• A) 90.3 kJ/mol
• B) -90.3 kJ/mol
• C) -147.4 kJ/mol
• D) -180.6 kJ/mol
• E) -73.7 kJ/mol

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Definitions:

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Allomones

Chemical substances produced and released by one species that affect the behavior of another species, often functioning as a defense mechanism or to attract mates.

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The monthly cycle of changes in the female reproductive system, leading up to menstruation.