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Aqua regia, which is a mixture of two acids, will dissolve gold. Aqua regia is a mixture of concentrated nitric acid (HNO3) and concentrated hydrochloric acid (HCl), usually in a 1 to 3 ratio respectively. Aqua regia is one of the few acids that will dissolve both gold and platinum as well as other metals. Interestingly, neither hydrochloric acid nor nitric acid alone will dissolve gold, but together, they will!
Both acids do different jobs. Nitric acid actually dissolves a virtually undetectable amount of gold, which reacts with the hydrochloric acid to produce ions that are much more soluble. This frees the nitric acid to dissolve the gold further, and the reaction continues.
See the Web Links to the left for more information about aqua regia.
Wiki User
∙ 10y ago
Wiki User
∙ 14y agoAqua regia or aqua regis (Latin for king's water) is a highly corrosive, fuming yellow or red solution. The mixture is formed by freshly mixing concentrated nitric acid and concentrated hydrochloric acid, usually in a volumetric ratio of 1:3 respectively. It was so named because it can dissolve the so-called royal, or noble metals gold and platinum, although tantalum, iridium, osmium, titanium and a few other metals are able to withstand it.
Wiki User
∙ 10y ago- Aqua regia, aqua regis, or nitro-hydrochloric acid is a highly corrosive mixture of acids.
- The mixture is formed by freshly mixing concentrated nitric acid and hydrochloric acid, optimally in a volume ratio of 1:3.
- It was named so because it can dissolve the so-called royal or noble metals, gold and platinum.
- Refer to link below.
Wiki User
∙ 13y agoAlkaline solutions of Potassium Cyanide. Mixture of concentrated hydrochloric and Nitric acids. Hot and concentrated Selenic acid.
Wiki User
∙ 13y agoAqua regia or "king's water" it is a corrosive mixture of very concentrated hydrochloric acid and nitric acid.
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When the dissolving rate equals the rates at which molecules come out of solution the solution is in?
When the dissolving rate equals the rate at which molecules comes out of solution the solution is in 'equilibrium'.
What is a mixture in which no more can dissolve?
A type of mixture that does not dissolve substances into one is called Immiscible.Miscible is when something is capable of blending or dissolving into another.
Dissolving solutes into a solution will?
lower vapor pressure
When a solution form in the chemical and physical change?
Dissolving
What Word would you use to descirbe sugar dissolving into water?
The Process Is called solution
What are meanings of solvent and solute?
solvent: a liquid or a solid substance capable of dissolving other liquids or solids. solute: is the dissolved matter in a solution.
When the dissolving rate equals the rates at which molecules come out of solution the solution is in?
When the dissolving rate equals the rate at which molecules comes out of solution the solution is in 'equilibrium'.
What mixture of acids is capable of dissolving gold?
Aqua regia:a mixture of concentrated HCL(hydrochloric acid)&conc. HNO3(nitric acid) in ratio of 3:1 ,can dissolve gold.
What is a substance that does the dissolving in a solution?
It is a solvent that dissolves in a solution.
Why does dissolving take place?
Dissolving takes place to turn a mechanical (heterogeneous) mixture into a solution (homogeneous solution).
How do you process silver?
Silver is processed by dissolving it from gold alloys. This is done by boiling it within a 30 percent solution of nitric acid.
Which term describes a substance that can be dissolved in a solution?
"soluble"
What is a mixture in which no more can dissolve?
A type of mixture that does not dissolve substances into one is called Immiscible.Miscible is when something is capable of blending or dissolving into another.
What is the term for dissolving medium in the solution?
Solvent is the term for a dissolving medium in a solution. The material which is being dissolved is called the solute.
What is weak solution?
the solution which has low dissolving power i guess
In a solution what is the substance doing the dissolving?
It is a solvent that dissolves in a solution.
What is a weak solution?
the solution which has low dissolving power i guess
