A chemist went on a trip to Zambales to obtain a sample of chalcocite (copper (I) sulfide), one of the most important ores of copper. He tried to extract copper from the ore by performing the following steps: Step 1: 2Cu2S(s) + 3O2(g) = 2Cu2O(s) + 2SO2(g) Step 2: Cu2O(s) + H2(g) = 2Cu(s) + H2O Question: If the chemist acquired 98.4 grams of chalcocite during his trip, calculate the theoretical yield of metallic copper in his experiment.
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.
A chemist went on a trip to Zambales to obtain a sample of chalcocite (copper (I) sulfide), one of the most important ores of copper. He tried to extract copper from the ore by performing the following steps:
Step 1: 2Cu2S(s) + 3O2(g) = 2Cu2O(s) + 2SO2(g)
Step 2: Cu2O(s) + H2(g) = 2Cu(s) + H2O
Question:
If the chemist acquired 98.4 grams of chalcocite during his trip, calculate the theoretical yield of metallic copper in his experiment. Express your answer in 3 significant figures. (Please solve the question clearly and with explanation).
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