2. Jom is testing out a chemical process for the extraction of iron metal from ferric oxide. They performed the following 2-step reaction (excess Zn(s) is removed by adding acid): (MW: Fe=55.845 g/mol; O=15.999 g/mol) I. II. Nitric acid was added to ferric oxide to yield ferric nitrate Excess zinc dust was added to the ferric nitrate to yield metallic iron a. Write the balanced reactions from steps I and II, and identify the type of reaction for each step. If it is a redox reaction, identify the reducing and oxidizing agents. b. If Jom started out with 694 mg of ferric oxide, what would be his theoretical yield for iron metal (in grams)? c. Jom was able to extract 0.256 g of iron metal from his experiment in (b.). What is his percent 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.
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