Unit 5.3 - Concentration Changes Over Time

Correction: at some point I say that for zero-order and second-order reactions, in order to solve for the half-life, you can choose any number you want for the initial concentration and then substitute in half that amount for the final concentration. This is incorrect. For zero- or second-order reactions, the length of the half-life will change depending on what the starting concentration is. The initial concentration would thus have to be given in the problem to solve for that specific half-life. My apologies.