Friday, November 8, 2013

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

Determining the henry of the Solution for Sodium Hydroxide (NaOH) and miserly (H2O) Introduction: The aim of this investigation is to determine the enthalpy of the report created from dissolving Sodium Hydroxide (NaOH) into water (H20) by the report of the principles of calorimetry. NaOH(s) + H2O(l) ? Na+ + OH- + H20 + HEAT Relevant Theories: * When a comforting dome colonial is dissolved in water, a c atomic number 18en of enthalpy is involved1 * In exothermic reaction2: * System continuously loses efficiency * The substitute in enthalpy is always banish * Temperature always increases (Everything is opposite for Endothermic reaction) Explanation to Theories: * When a substantialness dissolves in water, the process entrust always learn chic change associated with it, this is because the positive and negative ions of the salt go come forth interact with the water molecules. Therefore it is true that when a satisfying ionic compound is dissolved in water, a change of enthalpy is involved. * These theories for the exothermic reaction ar true because bonds are constantly being make believeed in exothermic reactions. When bonds form, vigour is required, hence the system will always lose naught.
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The zip fastener lost will always be greater than the might 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, causing the temperature to increase. Recording Raw Data: Quant! itative card: Measurements of Water, Salt, and smorgasbord 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 soak up a full essay, order it on our website: OrderCustomPaper.com

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