The heat of neutralization between an acid and a base was detemined using a coffee cup calorimeter with negligible contribution to the heat capacity. The aqueous solutions of the acid and base both registered an initial temperature of 28,0°C. Following the calorimetric procedure, 100 mL each of the two solutions with the same concentration were mixed in the calorimeter. After mixing, the temperature increased to 34.6°C. Assuming that the total volume of the mixture is also the volume of the water in the calorimeter and that the density of water is 1.00 g/mL, calculate the heat of neutralization of the process.
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 heat of neutralization between an acid and a base was detemined using a coffee cup calorimeter with negligible contribution to the heat capacity. The aqueous solutions of the acid and base both registered an initial temperature of 28,0°C. Following the calorimetric procedure, 100 mL each of the two solutions with the same concentration were mixed in the calorimeter. After mixing, the temperature increased to 34.6°C. Assuming that the total volume of the mixture is also the volume of the water in the calorimeter and that the density of water is 1.00 g/mL, calculate the heat of neutralization of the process.
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