What are the two compounds that copper can make when combined with sulfur?
This is copper and sulfur reacting to form copper(II) sulfide. Copper forms an ion with 2+ charge. Sulfur forms an ion with 2− charge, so the formula of copper(II) sulfide is CuS as the charges simply cancel out.
When the copper and sulfur are heated together in the crucible what happens to the excess sulfur?
While copper forms 2 different ions – Cu1+ and Cu2+, only one compound is formed – you will determine what the empirical formula of the compound you form is. Upon heating, the excess sulfur vaporizes to form gaseous sulfur, which escapes from the crucible.
What if all the excess sulfur was not burned off how would the empirical formula of copper sulfide be affected?
The empirical formula would be Cu1-xS because there would be an excess in sulfur. of copper sulfide be affected? There would not be a change to the empirical formula of the copper sulfide.
How is copper sulphide formed?
Cu2S can be prepared by heating copper strongly in sulfur vapour or H2S. The reaction of copper powder in molten sulfur rapidly produces Cu2S, whereas pellets of copper require much higher temperature. Cu2S reacts with oxygen to form SO2: 2 Cu2S + 3 O2 → 2 Cu2O + 2 SO.
What types of compounds does copper form?
Copper(I) (cuprous) compounds are all diamagnetic and, with few exceptions, colourless. Among the important industrial compounds of copper(I) are cuprous oxide (Cu2O), cuprous chloride (Cu2Cl2), and cuprous sulfide (Cu2S).
What is the action of sulphur on heating with Cu?
The copper wire reacts readily with the hot sulfur gas (S8, S4 and S2), forming a dark grey, brittle crystalline solid of copper sulfide. After ca five minutes of heating, carefully remove the hook and copper sulfide using tongs and allow any excess sulfur to burn, thus cleaning the copper sulfide.
What happens when copper sulphide is heated in air?
When a mixture of copper oxide and copper sulphide is heated then pure copper is obtained along with sulfur dioxide.
What happens when copper reacts with Sulphur?
The copper wire reacts readily with the hot sulfur gas (S8, S4 and S2), forming a dark grey, brittle crystalline solid of copper sulfide.
What is the empirical formula of a compound containing copper and sulfur given the following analytical results?
| Mass of crucible (constant weight) | 11.5957 g |
|---|---|
| Empirical formula of copper sulfur compound | Cu2S |
What happens when copper is heated with Sulphur?
What is the chemical formula of copper sulphate?
CuSO4Copper(II) sulfate / Formula
Copper(II) sulfate, also known as copper sulphate, is an inorganic compound with the chemical formula CuSO4. It forms hydrates CuSO4·nH2O, where n can range from 1 to 7.
What happens when copper reacts with sulphur?
What happens when copper sulphide reacts with sulphuric acid?
Copper reacts with hot and concentrated sulphuric acid to form copper sulphate, sulphur dioxide gas and water.
What compound is formed when copper is heated in oxygen?
copper oxide
For example, copper reacts with oxygen to produce copper oxide when it is heated in the air.
What is the compound for cu2s?
Cu2SCopper(I) sulfide / Formula
What is the formula of the copper compound that contains Sulphur?
Copper sulfate | CuSO4 – PubChem.
What is the empirical formula of a substance that is 40.0% carbon 6.7% hydrogen and 53.3% oxygen by mass?
1 Answer. Ernest Z. The empirical formula is CH2O .
What is copper sulfate compound or element?
Copper(II) sulfateCopper(II) sulfate / IUPAC ID
Copper(II) sulfate, also known as copper sulphate, is an inorganic compound with the chemical formula CuSO4. It forms hydrates CuSO4·nH2O, where n can range from 1 to 5. The pentahydrate (n = 5) is the most common hydrate of copper(II) sulfate.
What is the percent composition of copper sulfide and its empirical formula?
Let’s find the percent composition of the copper sulfide and its empirical formula. You know that the mass of copper is equal to. #m_(“copper”) = 2.289-2.077 = 0.212# #”g”#. The copper sulfide mass is equal to. #m_(“copper sulfide”) = 2.396-2.077 = 0.319# #”g”#. This means that the mass of sulfur is.
What is the law of definite composition in chemistry?
The law of definite composition was proposed by Joseph Proust based on his observations on the composition of chemical compounds. Proust proposed that a compound is always composed of the same proportions of elements by mass. Though initially controversial, the law of definite composition was supported by Dalton’s atomic theory.
What is the mole ratio of copper sulfide to sulfur?
This means that, for every 100g of copper sulfide, you get 66.5g of copper and 33.5g of sulfur. You now divide each element’s percentage by its molar mass to get the mole ratio of the two elements in the formula. #66.5# #”g”.
What is Proust’s law of definite composition?
French chemist Joseph Proust proposed the law of definite composition or proportions based on his experiments conducted between 1798 and 1804 on the elemental composition of water and copper carbonate. In 1806, Proust summarized his observations in what is now called Proust’s Law.