Hi,

can anyone tell me how to dissolve EDTA with acid and alkaline with the concentration of the reagents also. Thanks.

Unfortunately I don't have access to belstein from home, or I'd look it up for you. I imagine EDTA is reasonably soluble at neutral pH, but you could use pKa values to work out a pH at which it will be charged and buffer your solution to that.

 

Alternatively, figure it out experimentally. Put some EDTA in a beaker with water (I assume that's the solvent you're using) and see how pH affects solubility.

Generally EDTA dissolves OKish at high pH (around 8). I think you may get up to 0.5 M then. At near neutral you would only get a couple of mM into solution (I think around 10, but I may be wrong).