The reaction between methanol (CH3OH), and hydrobromic acid (HBr) forms bromoethane (CH3Br) and water (H₂0). Our reaction recipe calls for 1.3 molar equivalents of hydrobromic acid for every mole of methanol. a. What is the stoichiometric ratio of hydrobromic acid and bromoethane for the reaction as it occurs? b. If you run the reaction with 2.5 moles of methanol, how many moles of hydrobromic acid does our recipe call for? How many moles of hydrobromic acid would actually be used in the reaction?
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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