In lab, we did titrations with two different samples, and we also had a blank. In my calculations for my lab report, I was told to calculate the moles of EDTA needed to reach the endpoint (we were given the molarity). Later in the report, we are asked to find the "Blank corrected moles of EDTA required to reach the endpoint." I have no idea what this means. Could someone explain?

Question

anonymous · Answer

I'm not 100% sure on the experiment that you're referring to. I'm guessing that this is a complexation titration, so you're chelating metals using EDTA. If the blank required EDTA then there were metals present in the solvent that EDTA chelated to, this is just asking you to correct the amount of EDTA required for the titration by subtracting the amount of EDTA that gets bound from the solvent itself.

Again I'm not sure exactly what you're asking but I hope this helps!