Is it only 1g of gold per 1ml nitric?

[bhilton]

Is it possible to dissolve more than 1g of gold per 1ml of nitric acid?

 

[andu]

I guess it mostly depends on surface area. There are other oxidizers out there too.

 

[FrugalRefiner]

Yes.

Dave

 

[Yggdrasil]

Is it possible to dissolve more than 1g of gold per 1ml of nitric acid?

I assume you mean in Aqua Regia containing 1 ml of Nitric?
Since Nitric alone will not touch Gold.

 

[kurtak]

Is it possible to dissolve more than 1g of gold per 1ml of nitric acid?

Yes - it is "possible" --- it is also "possible" that it will take MORE the 1ml nitric (in AR) to dissolve a gram of gold

How much acid it takes to dissolve X amount of metal depends a great deal on "the conditions" under which you are dissolving the metals with your acid

I have posted about those "conditions" many times so here are some links to things I have posted to give you a better understanding about how much acid will dissolve how much metal under different conditions

https://goldrefiningforum.com/threa...ric-reasonably-cheap.30430/page-2#post-318763

https://goldrefiningforum.com/threads/silver-from-silver-solder-40.22286/#p233294

https://goldrefiningforum.com/threads/first-attempt-at-silver-refining.29559/page-2#post-310968

https://goldrefiningforum.com/threa...per-in-sterling-nitric-qty.29286/#post-308691

Kurt

 

[goldandsilver123]

Depends on the % of the nitric. 1ml of 69% will surely dissolve more than 1g of gold.

 

[kurtak]

Depends on the % of the nitric. 1ml of 69% will surely dissolve more than 1g of gold.

That is not quite true - though yes percent of nitric the nitric plays "somewhat" of role --- 1ml of 69% nitric will certainly dissolve more gold then say 1ml of 50% nitric

However you can not say that 1ml of 69% nitric will surely dissolve 1g gold --- & that is because "other" conditions play into dissolving metal with acid

Example - using 68% nitric - if you are dissolving a troy ounce (31.1 grams) of say gold foils you can likely dissolve that troy ounce with only (plus/minus - depending on other conditions) about 15 ml nitric

On the other hand - if you try to dissolve solid troy ounce gold coin with the same 68% nitric it will likely take (plus/minus - depending on other conditions) about 37ml nitric - so (plus/minus) 1.2 ml nitric

Read the links I posted about "conditions" when dissolve metals with acid

Kurt

 

[goldandsilver123]

That is not quite true - though yes percent of nitric the nitric plays "somewhat" of role --- 1ml of 69% nitric will certainly dissolve more gold then say 1ml of 50% nitric

However you can not say that 1ml of 69% nitric will surely dissolve 1g gold --- & that is because "other" conditions play into dissolving metal with acid

Example - using 68% nitric - if you are dissolving a troy ounce (31.1 grams) of say gold foils you can likely dissolve that troy ounce with only (plus/minus - depending on other conditions) about 15 ml nitric

On the other hand - if you try to dissolve solid troy ounce gold coin with the same 68% nitric it will likely take (plus/minus - depending on other conditions) about 37ml nitric - so (plus/minus) 1.2 ml nitric

Read the links I posted about "conditions" when dissolve metals with acid

Kurt

I've dissolved gold bars and gold powders in several kilogram batchs. 1mL of ~69% is more than enough to dissolve 1g.

Freechemist gave a good teoretical consumption of nitric that works.
N(V) -> N(III)

 

[Yggdrasil]

I've dissolved gold bars and gold powders in several kilogram batchs. 1mL of ~69% is more than enough to dissolve 1g.

Freechemist gave a good teoretical consumption of nitric that works.
N(V) -> N(III)

Yes, but the moment it is not pure everything changes.