[Dr.IC (OP)]

Does Sulphuric acid reacts with gold wire.

[Chemistry4me]

No.

[Dr.IC (OP)]

Which acid is preferable for the reaction, i want to see corrosion on the wire.

[Don_1]

So far as I'm aware, no acid or alkali reacts with pure gold. I could be wrong though. If it does, then the gold was not pure and the reaction is with the impurities rather than the gold.

[lightarrow]

Which acid is preferable for the reaction, i want to see corrosion on the wire.

Aqua regia:
http://en.wikipedia.org/wiki/Aqua_regia

Another way: cianide (ex. KCN) in presence of air oxygen, or another oxidant, ex. H₂O₂; in this second way (the reaction is called "bombing" in gold laboratories/firms) you MUST use a totally closed hood with tubes to put hands, because CN^- can also be oxidized to (CN)₂ which can kill you in a few seconds.

Instead of Aqua_regia you can also use HCl + H₂O₂ (it makes Cl₂) but it's slightly less effective. In both cases you have to heat up a little.

[Bored chemist]

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.

[lightarrow]

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.

It should be Selenic acid:
http://pubs.acs.org/doi/abs/10.1021/ja01995a007
http://en.wikipedia.org/wiki/Selenic_acid

[Dr.IC (OP)]

How about nitric acid? does this work.

[lightarrow]

How about nitric acid? does this work.

No, you need a complexant together with the oxidant (es. Cl- ions)

[neilep]

We make rings out of gold ewe know !

ewe can buy one off me and then conduct your tests ?..

..see how I try to help ?

[Dr.IC (OP)]

I have enough of gold wire to conduct tests....... if i am in short i will send u a message...

[Bored chemist]

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.

It should be Selenic acid:
http://pubs.acs.org/doi/abs/10.1021/ja01995a007
http://en.wikipedia.org/wiki/Selenic_acid

OOps, sorry, wrong group VI element.

[Raghavendra]

No,, But can't say ... under drastic condition it can change

[lightarrow]

No,, But can't say ... under drastic condition it can change

what can change?

[Chemistry4me]

The fact that gold does react with sulphuric acid under drastic conditions?

[lightarrow]

The fact that gold does react with sulphuric acid under drastic conditions?

Ah, I believed he answered BC... []
No, sulphuric acid cannot react with gold, even under drastic conditions; the acid is not complexant.

[Raghavendra]

 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

[lightarrow]

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

What does <<SO2 and NO2 in dry and humid air>> have to do with sulphuric acid?

[Chemistry4me]

If anything:

This reaction is inhibited by the sulfuric acid formed.

[Raghavendra]

ya [8D]