We were doing a small assignment on rates of reaction and I plotted the data I received from the lab we did today. It looks like a perfect graph of log(x) I have no idea why the instantaneous rate of change decreases over time. We haven't done this (we were only asked to graph, we're doing the slope stuff tomorrow) yet but I was just interested as to why that is. Thank you. :) My guess is as time passes, there are less reactants?