Multiple Choice
An important step in the synthesis of nitric acid is the conversion of ammonia to nitric oxide. 4NH3(g) + 5O2(g) 4NO(g) + 6H2O(g)
Calculate H°rxn for this reaction.
H°f [NH3(g) ] = -45.9 kJ/mol; H°f [NO(g) ] = 90.3 kJ/mol; H°f [H2O(g) ] = -241.8 kJ/mol
A) -906.0 kJ
B) -197.4 kJ
C) -105.6 kJ
D) 197.4 kJ
E) 906.0 kJ
Correct Answer:

Verified
Correct Answer:
Verified
Q13: Which of the following is not a
Q18: A 275-g sample of nickel at 100.0°C
Q40: A system which undergoes an adiabatic change
Q41: For all processes, both q and <font
Q42: The reaction<br>2NaOH(aq) + H<sub>2</sub>SO<sub>4</sub>(aq) <font face="symbol"></font> Na<sub>2</sub>SO<sub>4</sub>(aq)
Q46: Use Hess's Law to calculate the enthalpy
Q52: Your favorite candy bar, Gummy Beakers, contains
Q59: The standard state of a substance in
Q60: The combustion of glucose (C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>) with oxygen
Q67: Natural gas, or methane, is an important