Rec 5 - CHEM 1251 Recitation Materials W e ek 6...

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CHEM 1251 Recitation Materials Week 6 1 Equilibrium: Introduction and Applications Part I: Visualizing equilibrium— molecular pictures and graphs 1. The molecular-level picture below represents a gas-phase reaction. What would you expect box “E” to look like? Why? Draw your representation in the box. 2. You overhear a student in another group talking about the pictures in Question 1. He says, “Well, between points C and D, the reaction stops. So point “E” would be the same as C and D.” Carefully evaluate this statement. How would you respond? 3. Translate the molecular-level drawing into a graphical representation showing the concentrations of each molecular species over time. Clearly label each line with the molecular species it represents: 4. How would you determine the equilibrium constant for this reaction? Discuss a general strategy (what do you need to know; how would you set it up). Then set up all of the necessary steps and calculate a K value. (Be sure to explicitly state any assumptions you’re making.)
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Rec 5 - CHEM 1251 Recitation Materials W e ek 6...

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