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Which acid is preferable for the reaction, i want to see corrosion on the wire.
I have read, but never bothered to verify, that telluric acid dissolves gold.However, if I wanted to dissolve gold I would use HCl/HNO3.
How about nitric acid? does this work.
Quote from: Bored chemist on 11/03/2009 18:23:28I have read, but never bothered to verify, that telluric acid dissolves gold.However, if I wanted to dissolve gold I would use HCl/HNO3.It should be Selenic acid:http://pubs.acs.org/doi/abs/10.1021/ja01995a007http://en.wikipedia.org/wiki/Selenic_acid
No,, But can't say ... under drastic condition it can change
The fact that gold does react with sulphuric acid under drastic conditions?
Ohh u mean gold doesn't react with sulfuric acid... It's not true...But it reacts on some how.The reaction of sub-ppm amounts of SO2 and NO2 in dry and humid air on a gold foil was studied using a chemical reactor technique. Initially a humidity-independent transient reaction occurs that produces NO and SO3. This reaction is inhibited by the sulfuric acid formed. After this stage another reaction follows that is strongly humidity-dependent and occurs on the gold surface beneath a film of aqueous sulfuric acid. This reaction produces HNO2, NO, and H2SO4
This reaction is inhibited by the sulfuric acid formed.
Do you have to keep the temperature of the solution low?
Higher temperature favors the dinitration product when adding nitro groups onto an aromatic ring right? Or is that just my memory playing games?
I am mixing HNO3 and H2SO4 in the ration of 4:1, and heating it to drop on IC to make the die visible (for etching plastic).
Quote from: Dr.IC on 17/04/2009 10:41:11I am mixing HNO3 and H2SO4 in the ration of 4:1, and heating it to drop on IC to make the die visible (for etching plastic).1.Why 4:1? 2.The HNO3 is more than 98%?3.You use that mix to dissolve plastic or what, exactly?
I dont know y v r using 4:1
Quote from: Dr.IC on 21/04/2009 04:49:41I dont know y v r using 4:1Eh? Is your keyboard broken?------Are you trying to say: I dont know why they are using 4:1?