CHE 1302 Lecture Notes - Lecture 5: Reaction Rate, Rate Equation, Reagent
Document Summary
Baker | che 1302 | summer 2017 | lecture 5 | page 1. Solutions - homogeneous mixtures: solute is dispersed at molecular level, solute won"t settle out, particle diameter is about 10-9m (about 1 nanometer) Suspensions - heterogeneous mixtures: can be stirred up but will eventually settle out (like sand in water, macroscopic particles (10-6m or larger) It can look homogeneous for a bit but it"s not true. Kinetics - tells you how long the process will take to complete. Throwing ice water on a lizard slows it down and makes it easier to catch. Baker | che 1302 | summer 2017 | lecture 5 | page 2. Reactant concentrations - rates generally increase as reactant concentrations are increased: more molecules = easier to find each other and react. Temperature - rates generally increase rapidly as t increases: milk spoils when left on the counter, putting milk in a cold fridge slows down the reaction but doesn"t stop it completely.
