In this problem you are going to determine the molarity of a strong acid solution by measuring the enthalpy change of the acid’s reaction with a base, which causes the temperature of the reaction mixture to go from 22.3 °C to 34.8 °C. You will have to look up values from your OpenStax text. A) What is the underlying reaction of every acid-base neutralization reaction? What is the enthalpy change of this reaction per mole of acid? B) You performed this acid-base neutralization reaction with 100.0 mL of 2.00 M sodium hydroxide (base) and 60.0 mL of your unknown strong acid. What is the total volume of your reaction mixture after you mix the two solutions together? (The base is in excess.)
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.
In this problem you are going to determine the molarity of a strong acid solution by measuring the enthalpy change of the acid’s reaction with a base, which causes the temperature of the reaction mixture to go from 22.3 °C to 34.8 °C. You will have to look up values from your OpenStax text.
A) What is the underlying reaction of every acid-base neutralization reaction? What is the enthalpy change of this reaction per mole of acid?
B) You performed this acid-base neutralization reaction with 100.0 mL of 2.00 M sodium hydroxide (base) and 60.0 mL of your unknown strong acid. What is the total volume of your reaction mixture after you mix the two solutions together? (The base is in excess.)
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