CHEM 123N Lecture Notes - Lecture 14: Quadratic Equation, Equilibrium Constant, Negative Number

• School: Old Dominion University
• Department: Chemistry And Biochemistry
• Course: CHEM 123N
• Professor: John Donat

Document Summary

If you must solve a quadratic equation, choose the mathematical solution that makes chemical sense (not a negative number): calculate the equilibrium concentrations from the calculated value of x, check your results by substitution into the equation. The equilibrium constant of the reaction at 700k is 57. Q vs. kc, relative values of qc and kc determine the net reaction direction. Comparing q and k determine the net reaction direction. If stress is applied, equilibrium changes (temperature, pressure, concentration changes). Le chatelier"s principle on the chan(cid:258)e o(cid:257) concentration o(cid:257) reactant or product says. The stress of adding a reactant or product will be relieved by net reaction in direction that consumes the substance added. When pressure is increased, the reaction favors the side with the least amount of moles, when pressure is decreased, the reaction favors the side with the most amount of moles.