base. Standard school laboratory equipment and a supply of standardized 1.00 mol/L HCl and standardized 1.00 mol/L NaOH are available. a. What equipment would be needed? List them. b. What measurements should be taken? List them. c. Without performing calculations, briefly describe how the resulting data should be used to obtain the standard molar enthalpy of neutralization. d. When a class of students performed this experiment, the average of the results was -55.0 kJ/mol. The accepted value for the standard molar enthalpy of neutralization of a strong acid by a strong base is -57.7 kilojoules per mole. Briefly describe two likely sources of experimental error that could account for the result obtained by the class. Mistakes, blunders, or miscalculations are not types of experimental error.
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.
4. An experiment is to be performed to determine the standard molar enthalpy of neutralization of a strong acid by a strong base. Standard school laboratory equipment and a supply of standardized 1.00 mol/L HCl and standardized 1.00 mol/L NaOH are available.
a. What equipment would be needed? List them.
b. What measurements should be taken? List them.
c. Without performing calculations, briefly describe how the resulting data should be used to obtain the standard molar enthalpy of neutralization.
d. When a class of students performed this experiment, the average of the results was -55.0 kJ/mol. The accepted value for the standard molar enthalpy of neutralization of a strong acid by a strong base is -57.7 kilojoules per mole. Briefly describe two likely sources of experimental error that could account for the result obtained by the class. Mistakes, blunders, or miscalculations are not types of experimental error.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
