# How to distinguish palmitic acid from lauric acid?

I'm reacting either palmitic acid or lauric acid ($\ce{C16H32O2}$ or $\ce{C12H24O2}$) with $\ce{NaOH}$, sodium hydroxide.

I'm wondering if there's any way to tell which one of those two acids it is after I've already reacted it with NaOH. It has to be a relatively short process, as I won't have much time. I'm doing this for a lab.

In case you feel uncomfortable about what you may call "helping me cheat", please note that my assignment states that I can have online help:

You may look up information to complete your flow-chart, just be sure to cite your sources...

Note: it doesn't have to be NaOH, it could be any base, I just picked that one. If you think another one would work better, recommend that as well, please.