Experiment 9 Lab report - Some Examples of Chemical...

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Some Examples of Chemical Equilibria, Le Chatelier’s Principle Introduction: The purpose of this experiment is to observe and understand chemical reactions that are examples of chemical system at equilibrium. To do so, we will observe the change in concentration of reactants or products or the change in temperature that affects the state in equilibrium. Furthermore, we will determine how this creates a shift in direction therefore exemplifying the principles of chemical equilibria first stated by Le Chatelier. Procedure: 1. Transfer 3 ml of 1 M K 2 CrO 4 into a test tube and add several drops of 3 M H 2 SO 4 . Mix, observe, and record any change. Continue by adding several drops of 6 M NaOH, stirring continuously, until a change occurs. Add H 2 SO 4 again. 2. In a clean test tube, fill with 3 ml of water and add 2 drops of 6 M HCl followed by 4 drops of 6 M NaOH. Make observations and repeat with phenolphthalein indicator instead of methyl orange. 3.
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This note was uploaded on 02/10/2010 for the course CHEM CHEM112 taught by Professor Dr.jursich during the Spring '10 term at Punjab Engineering College.

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Experiment 9 Lab report - Some Examples of Chemical...

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