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Experiment 4 - E xperiment 4 Determination of a Chemical...

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Experiment 4 Determination of a Chemical Formula The purpose of this experiment is to observe the reactivity of metals when combined with water and acid, and also to introduce acid-base titration as a method to determine the molecular formula of a compound. The first part of this experiment showed a reaction of zinc and calcium with dilute HCl and water and show how different each metal reacts in each solution. The second experiment is a titration experiment to determine the chemical formula of a substance, which in our case is Ca(OH) 2 . A series of equations where used to determine the chemical composition of our solution. When a small amount of zinc was mixed with 6 M HCl in a test tube and quickly covered, gas formed, and a match was then lit next to the uncovered tube and pop sound occurred. A small amount of heat was produced at the bottom of that test tube. When calcium metal was added to .002 M HCl heat was produced at the
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