Experiment 4

Experiment 4 - Discussion The purpose of Experiment 4 was...

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Discussion The purpose of Experiment 4 was to observe the reactivity of metals with water and acid. Another purpose was to introduce acid-base titration as a method to determine the molecular formula of a compound. Part 1: Reactions of zinc and calcium with dilute hydrochloric acid and water were observed. This was accomplished by combining the reactions of Zn + 6 M HCl, Ca + 0.02 M HCl, Zn + water, and Ca + water. With each set of reactions came a series of instructions as to how to perform the reactions and what to observe during and after the reactions, as well as questions that could be concluded after the reactions had taken place. For example, one question asked what did the difference in the molarities of the HCl used in these reactions tell you about the relative reactivity of the two metals. After the experiments of Zn + 6 M HCl and Ca + 0.02 M HCl had both taken place this question could be answered by stating that the relative reactivity of the two metals is greater if the molarity (M) of HCl is greater number. Zn(s) + 2HCl (aq)
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This note was uploaded on 09/13/2011 for the course CHEM 1A Lab taught by Professor Staff during the Fall '09 term at UCSB.

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Experiment 4 - Discussion The purpose of Experiment 4 was...

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