Effect of Concentration and Temperature on Enthalpy of a Reaction
We performed a two-factor DOE to determine the effect of concentration and temperature on the enthalpy change of the reaction of hydrochloric acid with magnesium oxide. We hypothesized that if we react 1.0 M, 2.0 M, and 3.0 M hydrochloric acid at 10°C, 25°C, and 40°C with magnesium oxide, then neither the concentration nor the temperature will have a significant effect on the enthalpy of the reaction. We used an electronic temperature probe to measure the initial and peak temperature in °C of the HCl and used this data to determine the enthalpy change of the reaction. After performing the proper statistical analysis for two-factor DOEs, we concluded that our data supported our hypothesis and neither the concentration nor the temperature had a significant effect on the enthalpy of the reaction.
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