The commercial production of nitric acid involves thefollowing chemical reactions:4 NH3(g) + 5 O2(g)----->4 NO(g) + 6 H2O(g)2 NO(g) + O2(g)------> NO2(g)3 NO2(g) + H2O(l)------>2 HNO3(aq) + NO(g) (a) Which of these reactions are redox reactions? (b) In eachredox reaction identify the element undergoing oxidationand the element undergoing reduction. (c) How many gramsof ammonia must you start with to make 1000.0 L of a 0.150 Maqueous solution of nitric acid? Assume all the reactions give100% yield.
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.
The commercial production of nitric acid involves the
following
4 NH3(g) + 5 O2(g)----->4 NO(g) + 6 H2O(g)
2 NO(g) + O2(g)------> NO2(g)
3 NO2(g) + H2O(l)------>2 HNO3(aq) + NO(g)
(a) Which of these reactions are redox reactions? (b) In each
redox reaction identify the element undergoing oxidation
and the element undergoing reduction. (c) How many grams
of ammonia must you start with to make 1000.0 L of a 0.150 M
aqueous solution of nitric acid? Assume all the reactions give
100% yield.
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