# Equilibrium Constant

In this assignment you will:
Use an interactive computer program that allows you to explore the relationship between the extent of reaction and the equilibrium constant (Keq).
Understand that at equilibrium neither the reactants nor the products will have a zero concentration. Also understand that the concentrations of all reactants and products are NOT equal at equilibrium.
Write an essay in which you demonstrate an understanding of how the equilibrium constant (Keq) is associated with the extent of a reaction.

IMPORTANT: Your text should also include both a topic sentence and a summary sentence. A topic sentence should introduce the concepts and ideas relevant to the rest of the essay. A summary sentence should summarize the ideas and concepts discussed in the essay.

Consider the hypothetical reactions listed below. For each of the sample reactions below, assume that a solution containing only the reactants is yellow, a solution containing only the pure products is blue, and a mixture of blue and yellow solutions results in a green solution.
ReactionEquilibrium Constant (Keq)
#1: A+B — +D 3.910-12
#2: I+J — +L 8.710-1
#3: S+T — +V5.21018
Based on the concepts on chemical equilibrium to describe and explain what the equilibrium color should be for each of the reaction listed above.
When writing the text, you should make sure that you address the issues raised by the following questions. You do not need to address the following issues in the exact same order in the text as the questions were listed below. Your text content should have a logical flow to your ideas. Explain your logic clearly and completely, as if you were explaining your work to another student who is not familiar with the problem.

1.What information does the Keq constant reveal about the extent of a reaction?
2.How is the color of the solution at equilibrium related to the extent of reaction for the example reactions given?
3.How is the color of the solution at equilibrium related to the Keq constant for the example reactions given?
4.What are the extremes of color for the example reactions and what do they mean with respect to the extent of the reaction?
5.What color would you expect if 50% of the reactant were used up and approximately 50% of the products were formed?
6.What are the colors for the three example reactions when the system reaches equilibrium?
7.Suppose there is a fourth reaction for which the Keq constant is not known, but the reaction has the same features (reactants and product solutions are yellow and blue, respectively) as the other reactions.
i.Now imagine that this reaction is a green-blue color at equilibrium.
ii.Based on what you have learned about the relationship between extent of reaction and Keq, give an approximate range for the magnitude of the Keqconstant for this reaction. You will use the Keq values given for the three reactions showb above as your reference when approximating the range for the unknown Keq for the fourth reaction. There is no calculation required for estimating the range of the Keq for the fourth reaction.
iii.Explain your reasoning for the estimation of the Keq for the fourth reaction.
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Added on 15.05.2016 03:22