Given the reaction: ferrous oxide aluminum 25.0g ferrous oxide reacts with 5.0g aluminum 5. Which of the following is the correct chemical equation for the given reaction? A. Fe₂O3 Al Fe + B. FeO Fe + C. Fe₂O + D. FeO₂ + + + + A. 10 B. 5 Al Al Al 7. Which is the limiting reactant? A ferrous oxide B. aluminum Fe Fe 6. When the above equation is correctly balanced using smallest whole number coefficients, the sum of all the coefficient is 8. How many moles of the excess reagent will be left? A. 0.923 B. 0.463 9. How many grams of iron will be formed? A. 23.6g B. 70.8g iron + Al₂O3 Al₂O3 Al3O₂ Al₂O3 aluminum oxide C. 9 D. 7 C. iron D. aluminum oxide C. 12.5 D. 0.0695 C. 15.56g D. 35.4g
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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