chenbeier

Check the redoxpotentiales. What do thing do you get a reaction with Mn and B2O3?

Finally you will have iron-III-acetate. Fe(CH3COO)3

Maybe this: https://www.google.com/search?q=ketopentose+ringform&client=firefox-b&tbm=isch&source=iu&ictx=1&fir=-v76lGvCZRYPvM%3A%2CBx9t22rEqeKo4M%2C_&usg=AI4_-kRdF7ma8ygSKaqu772wrqjAcUGfMQ&sa=X&ved=2ahUKEwihgYq9juHeAhWhw4sKHdtUCi4Q9QEwA3oECAAQCg#imgrc=-v76lGvCZRYPvM:

Nevertheless, In my opinion any chemical treatment will change the meat of the fish.

Maybe in this way -RCO-NHR- + H+ + H2O = -RCOOH + +NH3-R

After this treatment the fish is also not eatable anymore. HCl will destroy the aminoacids as well.

Add some chlorine or hypochlorite and convert all bromide to bromine.

I am not sure there will be a precipitation. I would precipitate nickel hydroxide from the sulfate and later after filtering and wasching do a neutralisation with boric acid.

pH = -log(cH+) So if both acids have the value of 4 then there will be no chance.

Yeah this one question, the other is how much energy is needed to get the hydrogen. Is it worth to do. I would assume I need much more enegry to get it as later to obtain by using hydrogen in an internal combastian machine or fuel cell.

If so, why the question was asked? This discussion was realy wasted time. Difficult would be also to transfer the conditions of a furnace at 200°C / 50 MPa in side a mountain or rock.

As above mentioned, do the experiment.

I dont have a laboratory.My kitchen is for cooking food and not doing chemical experiments. On the other hand I have not the equipment to drill a hole in rock some feet deep. Also to find iron in this rock. Maybe the poster of this thread should do it.

Exactly!!!

In your table it says still 0,051 V at pH 12. So no reaction! Now you saying the ironions are not solouble what I also think, but how should a reaction takes place if the ions not dissolve? The reaction above can take place in a furnace at high temperature. And In nature I dont think that Fe2+ = Fe3+. So the potential is still depending of the concentrations, which are not really existing, because nothing is dissolved. In my opinion its still an adventure thesis.

For what purpose is the KOH. In the next process do the water disturbs? It is at least very difficult to dry KOH. Beside water also carbon dioxide will absorb and form potassiumcarbonate.

Fe(OH)2 is also almost insoluble. The oxidation to Fe3+ is more given by wet oxygen also called rust. Nevertheless, somebody should do an experiment to confirm, before drill hole in the rocks and to pump Hydroxide into the ground.

And again Fe(OH)2 or Fe(OH)3 is not much solouble. You need the reaction 2 Fe2+ + 2 H+ =>2 Fe3+ + H2 . In alkaline solution at pH 14 not much H+ available. I am also wondering where this formula E = E0 – 0.06 pH was developed from Nernst law. I am missing the the log(Fe2+/Fe3+) in it. To many question marks??????

I still dont beleave it will work. In alkaline solution Fe2+ and Fe3+ are existing as Hydroxides/oxides, there is no movement of ions. So far no hydroxicomplex known.

Ok, but I dont think in natural Rocks you have a pH of 14 . This can be achieved only with high concentratete NaOH or KOH.

According Fe + 2 H+ => Fe2+ + H2 the standard potential is-0,402 V . The standard potential of 2 Fe2+ + 2H+ => 2Fe3+ + H2 is+0,771 V From this value alone it can not work. To reduce a metal you need a negativ redox potential. With other words the first reaction is working the second not, it would go in opposit way. In rocks you don't have metallic iron, so this doesn't work in my opinion.

The experiment stays above the theory. Try it out. Clean the surface with som alcohol. Sometimes roughness of the surface helps. Etching with alcaline Permanganate / acidic permanganate.

Formic acid is an high etching and acidic compound. How do you want to applicate it to the lifestock.

Did you tried here: https://www.google.com/search?q=HER+and+OER&client=firefox-b&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwi8gKr7jYveAhVhMOwKHQ_SC68QsAR6BAgAEAE&biw=1704&bih=908

Fe2+ or Fe3+ is for Iron or alternativ Fe(II) or Fe(III).