Meaning of the Rate of Reaction
Rate is a positive quantity
Expression of how quickly a reaction goes
Measured in terms of a reactant!
Example H2O(g) ?H(g) + OH(g) (decomposition into free radicals)
The rate is a change in the concentration of water with respect to time. To compute this, compute the concentration of water at time t, [H2O](t), and subtract from this value the starting value, [H2O](0), and divide by the difference in time, t-0. Technically, this is