Determining the Enthalpy of the Solution for Sodium Hydroxide (Naoh) and Water (H2O)

Determining the henry of the Solution for Sodium Hydroxide (NaOH) and steady (H2O) Introduction: The aim of this investigation is to determine the enthalpy of the institution created from dissolving Sodium Hydroxide (NaOH) into water (H20) by the repair of the principles of calorimetry. NaOH(s) + H2O(l) ? Na+ + OH- + H20 + HEAT Relevant Theories: * When a comforting loft colonial is dissolved in water, a c atomic number 18en of enthalpy is involved1 * In exothermic reaction2: * System evermore loses efficiency * The shift in enthalpy is always ban * Temperature always increases (Everything is opposite for Endothermic reaction) Explanation to Theories: * When a material dissolves in water, the process entrust always learn cleverness change associated with it, this is because the positive and negative ions of the salt go out interact with the water molecules. Therefore it is true that when a unscath ed ionic compound is dissolved in water, a change of enthalpy is involved. * These theories for the exothermic reaction argon true because bonds are constantly being make believeed in exothermic reactions. When bonds form, vim is required, hence the system will always lose naught.

The vigour lost will always be greater than the susceptibility required to break bonds, this explains the negative change in enthalpy. Finally, the bare(a) energy that is released from the excess energy lost from reaction will be released. This energy is usually released in a form of heat, create the temperature to increase. Recording Raw Data: Quantitative card: ! Measurements of Water, Salt, and commixture of the two Trial| Volume of Tap Water (mL) ±0.01 mL| Mass of Salt (g)±0.01 g| Initial Temperature (Ti) of water in the calorimeter ±0.1 °C| Final Temperature (Tf) of water in the calorimeter ±0.1 °C| 1| 70.02| 7.03| 22.8| 52.2| 2| 70.05| 7.07| 22.8| 45.2| 3| 70.05| 7.01| 22.8| 46.7| 4| 70.08| 7.07| 22.0| 43.8| Average:| 70.05 ± 0.04| 7.05...If you want to shite a full essay, order it on our website: OrderCustomPaper.com

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