SiO2 + C → SiC + CO The unbalanced equation above shows carbon and silicon dioxide reacting to form silicon carbide (SiC, molar mass = 40.1 g/mol) and copper. Balance it before beginning. Silicon carbide is a semiconductor, and copper is an excellent conductor of electric current. Image: David Monniaux, CC BY-SA 3.0 , via Wikimedia Commons. https://en.wikipedia.org/wiki/Silicon_carbide#/media/File:SiC_p1390066.jpg A large electronics company is creating and testing SiC for use in new computer chips. A chemical technician has 44.0 g of each reactant. Assuming a 100% yield, what mass (in grams) of silicon carbide can be created from what the technician has available? Answer: g SiC
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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