Lab Report Exp4

Lab Report Exp4 - Ryan Cohen Monday, 6-8:50 pm 11/2/08 Ms....

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Ryan Cohen Monday, 6-8:50 pm 11/2/08 Ms. Sohn Lab Report The purpose of this experiment was to examine solutions of metals with water or acid and observe how they react. Moreover, the experiment served as an introduction to acid-base titrations, as a method of determining the molecular formula of a compound. In order to analyze the reactivity of metals with water and acid, the student mixes two metals, Zinc and Calcium, in different combinations of acid and water. Conclusions were then drawn by observing the presence and intensity of chemical reactions. The second part of the experiment used the method of titration to figure the molar ratio between Calcium and Hydroxide. The results allowed for the student to give an experimental chemical formula for Calcium and Hydroxide. Part 1 revealed some interesting results for the mixture of metals with water and acid. First, Zinc and 6M HCl were mixed. The balanced chemical equation for this reaction is: Zn(s) + 2HCl(l) ZnCl 2 (s) + H 2 (g). As expected, a reaction occurred.
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This note was uploaded on 05/17/2011 for the course CHEM 1AL taught by Professor Hooker during the Spring '07 term at UCSB.

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