Investigation 34 final draft

Investigation 34 final draft - Investigation#34 What...

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Investigation #34 What Factors Affect Chemical Equilibrium? CHM 116 LAB Group #4: Alissa I. Johanna L. Nicholas S. Troy R. (Absented) TA John Benedet T 12:40~3:30
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Introduction Equilibrium in chemistry means a chemical reaction and its reverse proceed at equal rates. According to Le Chatelier's principle, it can be used to predict the effect of a change in conditions on a chemical equilibrium. If a chemical system at equilibrium experiences a change in concentration, temperature, volume, or total pressure, then the equilibrium shifts to partially counter-act the imposed change. In this lab, there will be eight reactions based on the equilibrium reaction Each reaction will have color changes, and it determines the equilibrium shifts or not. Experimental In order to form the desired solution, iron thiocyanate, eight drops of 1M iron (III) nitrate and eight drops of 1M ammonium thiocyanate were placed in 100 mL of water, which formed an orange solution. Then 5 mL of iron thiocyanate was placed in 9 different tubes. The solutions 1M iron (III) nitrate, 1M ammonium thiocyanate, 0.10M tin (II) chloride, 0.1M silver nitrate, 1M
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