Recent content by Bluetheice

To: chemisttree Yes, the problem is figuring out how much HCl to add. To do that we first need to know how much is in the mixture. Finding difference of Fe3+ and Fe2+ should work, but I was concerned that it may only work IF HCl is added AFTER the etching process. Our mixture contains 1.7% w/w...

Hi, first of all thank you both for the reply. Perhaps I should have describe the problem in more detail, the mixture is used for etching steel. We know that the initial solution is 40%w/w FeCl3 and 1.7% w/w HCl. During etching Fe3+ is consumed, the reaction is 2Fe3+ + Fe -> 3Fe2+ and...

I have a solution which contains unknown amount of dissolved ferric chloride (FeCl3) and hydrochloric acid. Can I use the titration method with NaOH to determine the concentration of HCl? I was concerned since dissolved FeCl3 is also acidic, and the fact that NaOH will try to neutralize it...