CHEM1100 Lecture Notes - Lecture 7: Dynamic Equilibrium, Equilibrium Constant, Reagent
Document Summary
Homogenous equilibrium: equilibrium is a dynamic process, e. g. consider n2o4/no2 equilibrium: In chem1100, we employ rice tables and apply this approximation for expressions that involve cubed roots or higher when x<5% of the value. *must specify standard state: usually 105pa, but any standard state is ok as long as everything is kept consistent. How changes in conditions affect direction of the reaction: change in concentration: reactant or product, change in pressure, change in volume, change in temperature, two methods for doing this, le chatelier"s principle (qualitative, reaction quotient, q (quantitative) Le chatelier"s principle: if a chemical equilibrium is disturbed by a change in the conditions of the system, it will spontaneously respond by moving towards a new equilibrium state in the direction which reduces the effect of the change. Effect of temperature change: depends on the sign of h . If the temperature is changed, k changes: depends on whether the reaction is exothermic or endothermic.
