[haubertbr]

I'm working on a lab where i used NaOH with concentrations of .2, .1, ,05, .025. and .0125 molarities. i measured their absorbance at 565nm and they all had 1 drop of  phenophalien. I took readings every minute until 16 minutes passed. It looks like they all have a linear decrease in absorbance, but the .0125 concentration actually goes up. does this sound correct? how should each concentration of acid differ?

i based my lab off of this one but i modified it: https://tamapchemistryhart.wikispaces.com/file/view/Kinetics+of+Dye+Fading+Lab+Flinn+LQ1213.pdf

[Corribus]

It would be easier to determine what's going on if you could post your actual data, either in table format or preferably as a figure.