CHM 145 Lecture Notes - Lecture 3: Exothermic Welding, Chemical Kinetics, Reaction Rate

• School: Oakland University
• Department: Chemistry
• Course: CHM 145
• Professor: Charlene Hayden

Document Summary

The relevance of chemical kinetics: this chapter will address questions of how fast a reaction will occur (i. e. , kinetics), such as: Surface area of a solid reactant or catalyst. The rate of a chemical reaction: the rate of a chemical reaction measures how fast the reaction occurs. Rate = change in concentration per unit of time h2(g) + i2(g) 2 hi(g) General rate of reaction a a + b b c c + d d. Rate of reaction = rate of disappearance of reactants. = - (cid:866) [(cid:882)] = - (cid:866) [(cid:883)] a (cid:933) (cid:915) (cid:933) =(cid:866) [(cid:884)] = (cid:866) [(cid:885)] (cid:916) (cid:933) (cid:917) (cid:933) Based upon the chemical reaction below, write the reaction rate in terms of concentration of each chemical species. 2c2h6(g) + 7o2(g) 4co2 (g) + 6h2o(g) rate= - [(cid:896)2] - [(cid:884)2h6] (cid:860) [(cid:884)(cid:896)2] + 1[h2o] (cid:872) (cid:933) (cid:867) (cid:933) 4 (cid:933) (cid:871) (cid:933) Rate = change in concentration per unit of time.