Le Chatelier's Principle Essay

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Le Chatelier’s Principle



Questions

In Part I the reaction you observed was Mg(OH)2 (s) → Mg2+ (aq) + 2 OH- (aq). Compare the colors you observed in the experiment and answer these questions:


  A. Which way should the equilibrium shift when HCl is added? How do your results support your answer?
















  B. Which way should the equilibrium shift when Na2EDTA is added? How do your results support your answer?









  C. Is this reaction endothermic or exothermic? How do you know?


















In Part II the reaction you observed was:

HSO4- (aq) + H2O (l) → H3O+(aq)+SO42-.

Compare the colors you observed in the experiment and answer these questions:


  A. Which way should the equilibrium shift when Na2SO4 is added? How do your results support your answer?


















  B. Which way should the equilibrium shift when NaHSO4 is added? How do your results support your answer?











  C. Is this reaction endothermic or exothermic?




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September 16, 2012


When HC1 was added the equilibrium should have shifted to the left, the opposite direction from its original state. The solution added reacted by consuming the substance turning the solution into a cloudy white color.


When Na2EDTA was added the equilibrium should have shifted to the left, the opposite direction from its original state. The solution added reacted by turning the solution into a transparent liquid.


This reaction is endothermic because the solution HC1 and Na2EDTA added decreased the reaction as the equilibriums both shifted to the left.


When Na2SO4 was added the equilibrium should have shifted to the left. The solution reacted by creating more HSO4 even more when the 10 drops of the sodium sulfate solution was added as the color changed to a much lighter solution.


When NaHSO4 was added the equilibrium should have shifted to the right. [?]€˜ô [?]
$ & ( 0 J L Î Ò Ô 78LMNTThe solution reacted by its color turning into a...

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