THE EFFECT OF QUANTITIES OF MOLES OF AMMONIUM NITRATE AND BARIUM HYDROXIDE ON ENDOTHERMIC REACTIONS
The objective of this experiment is to determine which factors, molar quantities of ammonium nitrate (NH4NO3) and barium hydroxide (Ba(OH)2), produce the lowest minimum temperature of an endothermic reaction. The factors tested have high (+), low (-), and standard values. The magnitude of significance of each factor is tested. To conduct the experiment, different combinations of each factor are allowed to react together and the minimum temperature reached through this endothermic reaction is recorded. The data from the ammonium nitrate and barium hydroxide is then analyzed through a two-factor design of experiment (DOE). As a result, the DOE shows that neither of the factors, moles of ammonium nitrate or moles of barium hydroxide, or their interaction effect is significant. The data from every trial of ammonium nitrate and barium hydroxide show much colder temperatures than the average temperature of ammonium nitrate and water. The chemical endothermic reaction of ammonium nitrate and water is used in common commercial cold packs. By finding a colder endothermic reaction, a better cold pack can be made. Ultimately, although the DOE does not display any significant factors or interactions, the data illustrates how ammonium nitrate combined with barium hydroxide produces a much more endothermic reaction than ammonium nitrate and water.
Research Done By:
Katie Nowinski
L'anse Creuse High School
Valerie Zeer
Sterling Heights High School
Warren Consolidated Schools