The Effect Of Neutralization On Heat Change And Entropy
School Name
Heathwood Hall Episcopal School
Grade Level
10th Grade
Presentation Topic
Chemistry
Presentation Type
Non-Mentored
Abstract
Entropy is the amount of energy being released from a system at any given time by way of light or heat. Being one of the many thermodynamic properties of matter, everything in the universe exudes some sort of light or heat at all times, but certain processes and reactions cause a greater change in entropy than others. The purpose of this experiment is to test the effect of a neutralization reaction between Hydrochloric Acid(HCl) and the base, Sodium Hydroxide(NaOH) on the entropy of their surroundings. The manipulated variable was molarity because the difference in pH between 1 molar, 2 molar, and 4 molar bases and acids was negligible. The raw Data was measured in Change in Kelvin(or celsius). The data in terms of temperature change showed an upward trend as the molarity of the acids and bases were increased, but the Hydrochloric acid seemed to have a much larger effect on the change in temp than the sodium hydroxide. The heat energy released(and therefore the change in entropy) was much greater as the molarity rose showing that neutralization did in fact have a measurable effect on entropy.
Recommended Citation
Sawyer, Jake, "The Effect Of Neutralization On Heat Change And Entropy" (2016). South Carolina Junior Academy of Science. 204.
https://scholarexchange.furman.edu/scjas/2016/all/204
Location
Owens 101
Start Date
4-16-2016 11:00 AM
The Effect Of Neutralization On Heat Change And Entropy
Owens 101
Entropy is the amount of energy being released from a system at any given time by way of light or heat. Being one of the many thermodynamic properties of matter, everything in the universe exudes some sort of light or heat at all times, but certain processes and reactions cause a greater change in entropy than others. The purpose of this experiment is to test the effect of a neutralization reaction between Hydrochloric Acid(HCl) and the base, Sodium Hydroxide(NaOH) on the entropy of their surroundings. The manipulated variable was molarity because the difference in pH between 1 molar, 2 molar, and 4 molar bases and acids was negligible. The raw Data was measured in Change in Kelvin(or celsius). The data in terms of temperature change showed an upward trend as the molarity of the acids and bases were increased, but the Hydrochloric acid seemed to have a much larger effect on the change in temp than the sodium hydroxide. The heat energy released(and therefore the change in entropy) was much greater as the molarity rose showing that neutralization did in fact have a measurable effect on entropy.
