3 posts • Page 1 of 1
A half life is the time it takes for the reactant concentration to decrease by half, but how does that work when the stoichiometric coefficients of a chemical equation are not all 1? Does each reactant get a separate half-life, or is the concentration of all the reactants to be summed for an overall reactant concentration value?
Half-lives are rarely ever used for second order reactions anyway since they are dependent on the initial concentration. Half-lives are more useful for first order rate laws, because they allow you to deduce certain information about the reaction without knowing the initial concentration at all.
Half-life of second order reactions decrease at a much faster rate. Length of half life increases as you go down while the concentration of substrate constantly decreases, unlike zero and first order reaction.
Who is online
Users browsing this forum: No registered users and 1 guest