75.0g ammonia NH3 reacts with 197.0 g fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride (used in production of aluminum, in uranium processing, and in frosting of light bulbs) according to the unbalanced equation below. NH3(g) + F2(g) → N2F4(g) + HF(g) Answer all the following questions, show all the work and calculations. Pay attention to significant figures: Which reagent is the limiting reagent? How many moles of N2F4(g) is produced during this reaction? What is the theoretical yield in grams of N2F4(g)
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.
75.0g ammonia NH3 reacts with 197.0 g fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride (used in production of aluminum, in uranium processing, and in frosting of light bulbs) according to the unbalanced equation below.
NH3(g) + F2(g) → N2F4(g) + HF(g)
Answer all the following questions, show all the work and calculations. Pay attention to significant figures:
- Which reagent is the limiting reagent?
- How many moles of N2F4(g) is produced during this reaction?
- What is the theoretical yield in grams of N2F4(g)
- Given that actual yield of N2F4(g) is 94.0 g, what is the percent yield of N2F4(g)?
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