Copper metal

Copper compounds
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In nature, copper is found in both the free state and the joint system. It is found mainly in the form of sulphide, oxide and carbonate ores in the junction. Copper is called excellent metal. This is a transition element. Copper was first used by primitive humans.


Extraction of copper:

Copper extract is mainly done with copper pyrite ore. Copper pyrite ore concentration is done by fen flavan method. The floral copper is called impure copper. There are blisters on its group. It is 98% pure. Slowly cooling liquid copper, due to the exit of SO2 gas, it becomes blister.


Physical properties of copper:

it is a little reddish metal. Its melting point is 1083 ° C, boiling point is 2310 ° C and specific gravity is 8.95. It is tensile and aggressive. It is a good conductor of heat and electricity.


Chemical properties of copper:

It does not respond to dry air on ordinary heat. It gradually gets transformed into the cosmic carbonate in humid air. This does not react with dilute HCl. This concentrate produces the quepric chloride by reacting to the HCl. It does not react with cold and dilute H2SO4. When it is heated with concentrated H2SO4, SO2 gas is released. Nitrogen oxides (NO) with diluted HNO3 emits gas. 50% nitric oxide (NO) gas is released with concentrated HNO3. NO2 gas comes out with the concentrated HNO3. Nitrogen gas is released when the vapor of HNO3 is released on hot copper.

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Use of copper:

(i) In the construction of electric wires and electrical equipment

(ii) in electrification and electroplating

(iii) In the manufacture of coins and utensils

(iv) In the manufacture of alloys

(v) In the construction of calorimeter

Copper alloys
Brass Cu (70%), Zn (30%) in making utensils and idols
Kansa Cu (88%), Sn (12%) in the manufacture of utensils and statues
German Silver Cu (50%), Zn (35%), Ni (15%) in making utensils and statues
Gun Metal Cu (88%), Sn (10%) Zn (2%) in the manufacture of guns and machines

Copper compounds

Cupric Sulphate: Quepric Sulphate is also known as Blue Thoth or Blue Kassis. This is the most important compound of copper. This blue royal solvent is solid. It is quite soluble in water. Each of these molecules consists of five silencing molecules of water. It is used as a disinfectant, in electrical coating and electrical cells. It replaces complex compound potassium queprostinide by reacting with KCN. Copper sulfate is a toxin. Hence it is used as a fungicide. Anhydrous copper sulfate is colorless and gives it a blue color in the presence of a very small amount of water. Therefore, anhydrous copper sulphate is used in the testing of water.
White Bronze: Bronze with a high amount of tin is called white bronze.
Rold Gold: Rolled Gold is an alloy of copper used in the manufacture of cheap ornaments.
Cupric Chloride: This green concrete is solid. It is quite soluble in water. In one of its molecules, two molecules of water are present in the form of crystallization water. When heated to 150 ° C, it turns into unspecified salts. It is used as a catalyst in the formation of chlorine by docene method.
Cuprous Oxide: Copper oxide is obtained by heating copper powder with cupric oxide and heating it. It is a solid colored solid that is insoluble in water. It is used in making Ruby glass, color etc.



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