Overview for Solving Problems Using the Equilibrium Constant

Overview for Solving Problems Using the Equilibrium...

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Overview for Solving Problems Using the Equilibrium Constant. 1. Write chemical equation and set up the ICE table. 2. Begin filling in the ICE table by writing in the initial concentration of each species given in the problem, reactants and products. (Fill in the “I” line—the first line under the chemical equation). 3. Fill in line C of the ICE table, the change in concentrations of all species. 4. Fill in line E the ICE table, the concentration of species when the system is at equilibrium. 5. Write the equilibrium expression (this is the mathematical equation) and plug in the equilibrium concentrations as they are represented in the “E” line in the ICE table. 6. Make any assumptions if convenient. 7. Determine the numerical value of x. 8. Check any assumptions that were made in step 6. If the assumption was not valid, use the quadratic equation or the successive guess method to determine x. 9. Use the value of x to determine the equilibrium concentrations of all species. The equations written in line E of the ICE table should be used to do this. 10. Reread the problem to make sure you answered all parts of the question because by this time you may have forgotten the whole purpose of the problem!
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The ICE Table and Solving Equilibrium Problems. The ICE table is a useful tool for solving equilibrium problems. The letters in ICE stand for “ I nitial Concentration”, “ C hange in Concentration” and “ E quilibrium Concentration”. When considering an equilibrium problem, there is usually some indication of the reactants and
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This note was uploaded on 10/26/2011 for the course CHEM 20B taught by Professor Felker during the Spring '08 term at UCLA.

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Overview for Solving Problems Using the Equilibrium...

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