Which sulphides dissolve in aqua regia?

Asked by: Neil Price  |  Last update: 18 June 2021
Score: 5/5 (44 votes)

Aqua regia is a yellow-orange (sometimes red) fuming liquid, so named by alchemists because it can dissolve the noble metals gold and platinum, though not all metals.

View full answer

Also, Which sulphides are soluble only in aqua easier?

NiS,CoS,HgS are soluble in aquaregia while CdS dissolves in conc.

Then, Which metal does not dissolve in aqua regia?. Intriguingly, while aqua regia does dissolve gold, platinum, mercury, and other metals it does not dissolve silver, nor iridium.

Beside the above, Is ZnS soluble in aqua regia?

Zinc Sulfide ZnS 2.19 355 10,000 22,000-750 (0.45-14.0) 14,000-1000 (0.7-10) Soluble in acid; insoluble in water. Germanium Ge 4.0 550 7000 5000-600 (2.0-17) 5000-900 (2.0-1.4) Insoluble in water; soluble in hot H2SO4 and aqua regia.

Does Diamond dissolve in aqua regia?

Answer. according to me it's not,aqua regia is a type of acid...and non metal can't be easily reactive to acid...and even diamond is a allotrope of carbon it's molecular bond is too strong to get break by any of the acid...

28 related questions found

Is aqua regia dangerous?

Aqua regia solutions are extremely corrosive and may result in explosion or skin burns if not handled with extreme caution.

Is ZnS soluble in water?

3.2Experimental Properties

Zinc sulfide appears as a yellowish-white powder in a liquid. Insoluble in water and denser than water.

Is ZnS more soluble in acid?

This question hasn't been answered yet. 1) Zinc sulfide (ZnS) has an increased solubility in acidic waters that is analogous to the increased solubility of PbS in acidic conditions. Using this information, and the K values in the following table, calculate the solubility of ZnS at a pH of 2.35.

How do you dissolve ZnS?

A combination of KClO3+HCl followed by 4 N HNO3 boiling gently for 20 min has been shown to be very effective in dissolving all the sulfide minerals.

Can you drink aqua regia?

We can drink orange juice, and use vinegar in cooking and for cleaning. Strong acids, on the other hand, can be extremely harmful if you come in contact with them. ... Aqua regia is a combination of two strong acids, hydrochloric acid (HCl) and nitric acid (HNO3), which react to form an incredibly acidic solution!

What is the deadliest acid?

The world's strongest superacid is fluoroantimonic acid, HSbF6. It is formed by mixing hydrogen fluoride (HF) and antimony pentafluoride (SbF5). Various mixtures produce the superacid, but mixing equal ratios of the two acids produces the strongest superacid known to man.

Does aqua regia react with plastic?

Aqua regia will melt some plastics and corrode/dissolve most metals. ... If you leave something to soak overnight, the container must be clearly labeled as "Aqua Regia, Extremely Corrosive!" The traditional solution is comprised of a 3:1 mixture of hydrochloric acid and nitric acid, respectively.

Which of the following is insoluble in ACOH?

Calcium oxalate is insoluble in acetic acid.

Which of the following sulphides is yellow in Colour?

CdS is yellow in colour.

Is nh4oh soluble in water?

Ammonium hydroxide is an inorganic herbicide, fungicide and microbiocide. It is currently not approved for use in the EU. It is non-volatile and highly soluble in water.

Is na2s soluble in water?

Sodium sulfide is the chemical compound with the formula Na2S, or more commonly its hydrate Na2S·9H2O. Both the anhydrous and the hydrated salts are colorless solids. They are water-soluble, giving strongly alkaline solutions.

What is the pH of aqua regia?

Aqua regia is a yellow-orange fuming liquid, so named by alchemists because it can dissolve the noble metals gold and platinum, though not all metals. Since, it is a mixture of concentrated acids, its pH value is almost near to zero.