Ammonia is used in the production of nitric(V) acid. a) Write an equation for the oxidation of ammonia to nitric(II) oxide. 4NH3(g) Ammonia +502(g)oxygen →6H2O(v)water+4NOg Nitric oxide b) Use enthalpy of formation data (from a data book) to calculate the value of ?H for the reaction in a) (The table of enthalpy values for the chemicals should be presented) c) Explain why this reaction is carried out at 900 °C, despite the value that you calculated in b)
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Ammonia is used in the production of nitric(V) acid.
a) Write an equation for the oxidation of ammonia to nitric(Il) oxide.
b) Use enthalpy of formation data (from a data book) to calculate the value of H for the
reaction in a) (The table of enthalpy values for the chemicals should be presented)
c) Explain why this reaction is carried out at 900 °C, despite the value that you calculated in b)
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