Lab #2 - Chemical Reactions - Results and Discussion:...

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Results and Discussion: Several types of chemical reactions were performed and observed. These include metathesis, complexation, and acid-base neutralization reactions. Metathesis or double displacement reactions occur when salts, acids, and bases react by exchanging places. Similar to metathesis, complexation reactions are reactions in which elements replace each other, but in complexation atoms bond when ligands combine with a central ion. In acid-base neutralization, an acid and a base combine to produce a salt and water. A1. Magnesium Sulfate and Barium Chloride Magnesium sulfate was added to barium chloride to produce solid barium sulfate. The products MgSO 4 and BaCl 2 are clear colorless liquids. The product BaSO 4 is a solid white precipitate. The change is instant. BaCl 2 (l) + Mg(SO 4 )(l) BaSO 4 (s) + MgCl 2 (aq) A2. Sodium Carbonate + HCl Five drops of 6M HCl is added to 2ml of sodium carbonate. A clear liquid and a gas were formed. The presence of CO 2 is evident from the formation of bubbles and gas fumes. Na 2 CO 3 (l) + 2HCl(l) H 2 O(l) + 2NaCl(l) + CO 2 (g) A3. Acetic Acid and Sodium Hydroxide Sodium Hydroxide was added drop by drop to a colorless solution of phenolphthalein indicator
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This lab report was uploaded on 09/26/2007 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell University (Engineering School).

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Lab #2 - Chemical Reactions - Results and Discussion:...

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