Consider the Haber process shown below. N2 (g) + 3 H2 (g) → 2 NH3 (g) Which of the following statements IS NOT TRUE? Assume 100% yield. 28 grams of nitrogen gas reacts with 6 grams of hydrogen gas to form 34 grams of ammonia gas. 5 molecules of nitrogen gas reacts with 15 molecules of hydrogen gas to form 10 molecules of ammonia gas. 15 moles of nitrogen gas reacts with 45 moles of hydrogen gas to form 30 moles of ammonia gas. 25 grams of nitrogen gas reacts with 75 grams of hydrogen gas to form 50 grams of ammonia gas.
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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