Chem 104 1st Edition Lecture 29 Outline of Last Lecture I. Two point formOutline of Current LectureI. Chemical equilibriuma. Equilibrium is not the same as equalb. Analogy to explain equilibriumc. Equilibrium constanti. Law of mass actionCurrent LectureI. Chemical equilibrium is interested in the reaction, but not just the complete reaction, but going back to the product. Going back to the product is equilibrium. At equilibrium the rate of a forward reaction is the same as the rate of a reverse reaction. However, being at equilibrium does not mean the reaction is equal. Some reaction reaches equilibrium only after almost all reactants are consumed. So equilibrium favors the products. In other cases the reaction reaches equilibrium when a small percent of reactant is consumed. Now the equilibrium favors the reactants.A way to think of equilibrium is to picture two countries that share a border. Country A gets overpopulated and some people emigrate to Country B. Country B can immigrate to Country A and some people will move back to Country A.The equilibrium constant represents the relationship between reactants and products. The law of mass action is the relationship between the chemical equation and the concentration of reactants and products. The equation is below:D ¿d¿B ¿bA ¿a∗¿¿C ¿c∗¿¿K= ¿So, naturally there need to be a few rules with laws:1. Its product over reactant. This is C and D dividing A and B.2. The exponents are the coefficients3. Product concentration is multiplied. Reactant is also multiplied.4. K is unit
View Full Document
Unlocking...