given reaction in stoichiometric An unknown metal with a mass of 6.53 g is heated to 388.15 K. The metal is then tell the change in enthalpy for a placed in 22.66 mL of water at 301.85 K. As a result, the temperature of the water suddenly 1.2 x 10 mol The heat of cơ The known TE constant volu Thermochemical equations release of heat, then AH Ar constant pressure, AH must be negative. - -52 kl/mol. This because a cor relationships. chemical reaction with an indicated change in enthalpy is called a thermochemical equation. Beyond V -52 kJ/mol Read Related %3D neutralization H + OH H.O AH journals What Have I Learned So Far? 1. 2. Beyo increases to 307.65 K. What is the specific heat of the metal? Fo PV Work at Constant Pressure at htt The previous example involves a reaction with no significant change in volume, whid means that the total volume is just the summation of the volumes of the reacting substances Therefore, no work was done because the change in volume is zero. Accordingly, equation 5.2 is used hut bocaunn Hess's T

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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.