Factors Which Influence the Rates of Reactions Essay

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REFERENCES GENERAL CHEMISTRY FOR ENGINEERING AND SCIENCE II CHE 152-50 Factors Which Influence the Rates of Reactions pages 1-10 OBJECTIVES To examine the factors which cause the rate of chemical reactions to change. QUESTION The question that was proposed for investigation was: Do all factors change the rate equally? Background Discussion For this experiment you have to have a basic understanding of Collision Theory to understand what’s going on in the experiment. Collision Theory is a model of chemical reactions in which a reaction occurs after a collision containing enough energy occurs between two reactant molecules. This model has five factors which can be affected and they are the nature of…show more content…
In the final part of phase one which was steps 9-11, five different metals were placed in Hydrochloric acid. The five metals were copper, magnesium, lead, iron and zinc. Magnesium was the first to react and it created bubbles before it completely dissolved in the acid. Zinc was extremely reactive and produced a lot of bubbles. Iron started reacting after zinc and created some bubbles. Then slowly lead had produced a few bubbles and copper didn’t make any (Lab Guide pg.2). Next in phase two of the experiment which was titled Concentration and that was steps 12-14. In this phase 3 wells were filled with different concentrations of 6m HCL. The first well contained 60 drops of water and 20 drops of acid. The second one contained 40 drops of water and 40 drops of acid and the final well contained 80 drops of acid. After each of the wells were stirred a piece of clean zinc was placed into each of them. Well three almost immediately produced smoke with a lot of bubbles. Well 2 reacted soon after with a lot of bubbles and lastly Well 1 reacted creating some bubbles (Lab Guide pg.3). Then in phase three which was titled Temperature and that was steps 15-18, clean zinc was placed in three different test tubes containing 5ml of 6M HCL, each of which was a different temperature. Test tube one was placed in boiling water, Test tube 2 was at room temperature and test tube three was placed in an ice bath. When the zinc was placed in test tube 1 it reacted quickly and
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