Is CuS soluble?
Is CuS soluble?
Large quantities of the compound are obtained by heating cupric sulfide (CuS) in a stream of hydrogen. Cuprous sulfide is insoluble in water but soluble in ammonium…
Is copper sulfide soluble?
Copper(I) sulfide
| Names | |
|---|---|
| Melting point | 1,130 °C (2,070 °F; 1,400 K) |
| Solubility in water | Insoluble |
| Solubility | slightly soluble in HCl; soluble in NH4OH; dissolves in KCN; decomposes in HNO3, H2SO4 |
| Hazards |
What is CuS formula?
CuS
Copper(II) sulfide/Formula
Is copper II sulfide soluble or insoluble?
Chemical Properties Copper(II) sulfide, CuS, [1317-40-4], MW 95.6, occurs in nature as the blue-black mineral covellite, [19138-68-2]. It is insoluble in water but is decomposed by nitric acid.
Is CuS soluble in basic solution?
Sufide ion is the conjugate base of HS-, a weak acid with a Ka of 1.3 x 10-13. This means that sulfide ion is a relatively strong weak base, and will accept protons. Since sulfide is basic, CuS will dissolve in acidic solution. Since sulfide is basic, CuS will dissolve in acidic solution.
Where is CuS most soluble?
CuS is more soluble in an acidic medium than in pure water since the anion S2- is basic.
How do you dissolve a CuS?
The dissolution of CuS proceeds via a reaction of Fe3+ with the surface of CuS. Fe3+ is transferred from the liquid bulk to the external surface of the CuS particles, and, when porous, to the internal surface. Elemental sulfur is formed, and Cu2+ is dissolved into the liquid.
Why is CuS insoluble in water?
Since most anions are weak bases, solubility is highly pH dependent. The basic anion may become protonated in acidic solutions, and thus the “insoluble” salt will dissolve. For example, consider the solubility of CuS. This means that sulfide ion is a relatively strong weak base, and will accept protons.
What bonding is CuS?
The bonding in copper sulfides cannot be correctly described in terms of a simple oxidation state formalism because the Cu-S bonds are somewhat covalent rather than ionic in character, and have a high degree of delocalization resulting in complicated electronic band structures.
Does CuS dissolve in nitric acid?
But dilute H2SO4 is non-oxidising, and so it is unable to attack the insoluble CuS effectively. In case of nitric acid (HNO3), even the dilute acid has strong oxidising properties and so it can more easily react with the insoluble sulphide at high temperatures.
Is CuS a base?
Since it forms a weak acid, then S-2 is basic and CuS will be soluble in acidic medium.
Is CuS soluble in base?
What is the formula for CUS?
The formula of the chemical compound Copper monosulfide is CuS
Is CuNO3 insoluble or soluble?
Is CuCO3 (Copper (II) carbonate) soluble or insoluble in water? The answer is that it is insoluble in water. Although it is an ionic compound, it does not d… Is CuCO3 (Copper (II) carbonate)…
What is the chemical name for CUS?
Copper monosulfide is a chemical compound of copper and sulfur. It occurs in nature as the dark indigo blue mineral covellite. It is a moderate conductor of electricity. A black colloidal precipitate of CuS is formed when hydrogen sulfide, H2S, is bubbled through solutions of Cu(II) salts.
Is CuSO4 soluble in dilute HCl?
At higher concentration of CuSO 4, Cu (2+) may reduce not to copper metal (orange) but to Cu 2 SO 4, a “semireduced” copper sulfate that is soluble in HCl in a such diluted solution. Both copper and acid can react with aluminum but you have to know one very important thing about aluminum.
