A chemist measures the energy change AH during the following reaction: 2 Fe₂O3(s)→ 4 FeO(s) + O₂(g) Use the information to answer the following question. Suppose 67.5 g of Fe₂O3 react. Calculate how much heat will be released or absorbed. Be sure your answer has the correct number of significant digits. ΔΗ = 560. kJ 1x1
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.
The way this question is set up is very confusing to me, we havent gone over this in class or in any of the homework we have. While the answer for this is very much appreciated, what is something I should look out for in a problem like this and how would I go about solving this? (I have two more questions that are similar to this but this question is the first of the three I have)
we have to calculate heat released or absorbed for the reaction of 67.5 g Fe2O3
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