There are two main ways to convert nitrogen to ammonia: Nature uses nitrogenase enzymes, whereas humans use the Haber-Bosch process, in which gaseous N₂ and H₂ are heated to high temperatures and flowed over an iron-containing catalyst bed to produce ammonia. Which statements are true about these systems? (1) Nitrogenase is a heterogeneous catalyst (i) The energy change for the overall reaction is the same, no matter which catalyst system is used. () The activation energy for the overall reaction is the same, no matter which catalyst system is used. O Statements i and ii are true. O Statements i and il are true. Only li is true. Only iis true. OOnly it is true. D
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.
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