why must MgCl2.6H20 be added to the EDTA solution
1 answer
Who knows? It depends upon what procedure you're following. What is the context of the problem. Probably you're talking about the determination of a metal, say calcium or zinc or another and MgCl2 must be added in order to complex an interfering metal. You need to clean up the problem in order for us to know what's going on.