Acetic acid (HC2H3O2) can be neutralized with sodium hydroxide, as you saw in laboratory 4. The temperature of the surroundings (the water) increased in value, meaning that the reaction was exothermic. the temperature of the solution increases by 10.0 oC,
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.
Acetic acid (HC2H3O2) can be neutralized with sodium hydroxide, as you saw in laboratory 4. The temperature of the surroundings (the water) increased in value, meaning that the reaction was exothermic. the temperature of the solution increases by 10.0 oC, calculate qrxn* (in kJ) for acetic acid and sodium hydroxide (assume the density of the final solution is 1.00 g/mL and the specific heat is 4.184 J/g °C).
Calculate the number of moles of NaOH in 30 mL of a 1 M solution, and use the number to calculate ∆Hrxn in kJ/mol.
The reported value of ∆Hrxn for the neutralization of HC2H3O2 with NaOH is -54.3 kJ/mol. Calculate the percent error in your measurements to the nearest 0.1 %.
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