CHEM102 Lecture Notes - Lecture 1: Miscibility, Reaction Rate, Stoichiometry

• School: University of Alberta
• Department: Chemistry
• Course: CHEM102
• Professor: Camille Bowen-Forbes

Document Summary

For example, reaction between two immiscible liquids is very unlikely. A reactant with greater surface area to volume ratio reacts faster: higher temperature: particle have more energy, and hence more successful collisions occur, use of a catalyst. The concentration of both a and b changes as reaction proceeds. So, during the period t1 and t2, with respect to a, = [(cid:3002)] : the negative sign is used as rate of reaction is always a positive quantity, and [a] is a negative value, as the concentration of reactant decreases over time. If we rewrite the equation with respect to b, the negative sign is excluded, as concentration of b (product) increases over time: square brackets (eg [a]) indicate concentration in mol per l, mol per dm3 or m. 1l = 1 dm3: concentration change according to stoichiometry. No2 (g) no (g) + (cid:2869)(cid:2870)o2 (g) (cid:2869) =[(cid:3016)(cid:2870)] (cid:2869) =[(cid:3015)(cid:3016)]