Experiment #4

Experiment #4 - Nathan Pike Wensday 6PM Bethany Wigington...

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Nathan Pike Wensday 6PM Bethany Wigington Experiment #4 Introduction: (Pre-lab) The purpose of this lab was to determine molecular formulas through the use of acid titration. Also, to observe the reactions that occurred when the metals calcium and zinc came in contact with acid and water. Introduction: This lab was important to help prove that acid-base titration was an accurate form of determining a molecular equation. Through the oxidation-reduction reaction of calcium with water and hydrochloric acid, the molecular equation of the product (Ca(OH) 2 ) was easily found. The different reactions of zinc and calcium also gave a lot of information about the reactivity of metals with water and acid. Discussion: First, zinc was added to 6M HCl (Zn(s)+2HCl(aq) ZnCl 2 (aq) +H 2 (g)) in small test tubes. The reactions of the solution included small bubbles, a small amount of pressure could be felt when the top was covered with a finger, and the zinc was propelled around. When calcium was added to .02M HCl (Ca(s)+2HCl(aq)
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This note was uploaded on 03/14/2012 for the course CHEM 1A 1AL taught by Professor Van koppen during the Winter '11 term at UCSB.

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Experiment #4 - Nathan Pike Wensday 6PM Bethany Wigington...

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