CHM1011 Study Guide - Quiz Guide: Radioactive Decay, Reaction Rate, Reaction Rate Constant

• School: Monash University
• Department: Science - Chemistry
• Course: CHM1011
• Professor: Various

Document Summary

Refers to the speed at which a reaction occurs. Unit is always given as mol l-1 s-1 or m s-1. Only has a single value for a reaction. Rate of product formation or reactant decay may vary at different times during the reaction. K= rate constant: characteristic of reaction and environmental conditions: units change with reaction order. Degree to which reaction rate depends on concentration of reactant. Reaction rate is independent of reactant concentration. Units of rate constant (k)= mol l-1 s-1. Reaction rate is directly proportional to concentration of a reactant. Units of rate constant (k) = s-1. Concentration of reactant over time is non-linear. Reaction rate is directly proportional to the square of the reaction concentration. Units of rate constant (k)= l mol-1 s-1. Also a non-linear relationship for concentration over time. Initial rate is faster than for first order, but slows quicker.