Why can some metals not be extracted by heating with carbon?

Q: What is hydrometallurgy? Give one example where it is used for metal extraction.

A: The definition of hydrometallurgy with an example has to be discussed,

Q: 6 The graphite anodes have to be replaced regularly. Why is this? 7 Why is it so much more…

A: Bauxite is a sedimentary rock and it is the ore of Aluminum. The chemical composition of bauxite is…

Q: Write the balanced molecular chemical equation for the reaction of solid sodium with aqueous zinc…

A:

Q: Why metals like potassium and sodium can not be extracted by reduction of their oxides by carbon?

A: Potassium and Sodium are highly electropositive elements. They have positive oxidation state when…

Q: As an analyst, you were asked to determine the Ca content of the dolomite samples from Manila Bay…

A: Gravimetry analysis is a method of quantitative chemical analysis In this method  the species which…

Q: >What compound has been historically used to leach gold from gold ores? Why is this process being…

A: The compound that has been used to leach gold from gold ores is sodium cyanide.

Q: >Name three advantages of making metal components from the powder metallurgical process.

A: The important three advantages of Powder metallurgy are given below.

Q: How is lake test for aluminium ion based upon adsorption?

A: The lake test for aluminium ion is done based upon adsorption by litmus paper testing. Al2O3.nH2O…

Q: Heating pyrites to remove sulphur is called:(a) Smelting(b) Calcination(c) Liquation(d) Roasting

A: The process to remove sulfur from pyrites is called Roasting. Option (d) is correct.

Q: (a) Giving examples differentiate between calcination and roasting.(b) What is the role of cryolite…

A: Hello. Since more than one question has been asked, the first question shall only be answered in…

Q: Why is anhydrous ammonia not used as reducing gas in polpulated areas?

A: Anhydrous ammonia: It is the compressed liquid form of ammonia that is free from water. In other…

Q: Explain the different production process of advanced materials like carbon filter, ceramics, and…

A: The different production processes of advanced materials like a carbon filter, ceramics, and micro…

Q: Describe how you would prepare 1litre of 150ppm Cu2+ using Cu metal

A: ppm is defined as the parts of solute or mass of solute present per million parts of solution Hence…

Q: A basic lining is given to a furnace by using:(a) Calcined dolomite(b) Copper sulphate(c)…

A: The metallic compounds which are found in nature, called as minerals whereas the minerals which can…

Q: Name the principal ore of aluminium. Explain the significance of leaching in the extraction of…

A: Aluminium is generally extracted from bauxite ore.

Q: How can evacuated the hot gases formed by reactions of the molten metal in die casting?

A: When metal parts of certain geometry are to be produced at a faster rate, die casting process is…

Q: Describe how you will prepare 1L of 150.0ppm of Cu2+ using Cu metal

A: The 1.0 ppm is equal to 1 mg of Cu2+ ion in 1.0 L of the solution thus,

Q: On what principle is the method of zone refining of metals based?

A: In nature,metals are not found in pure form . They exist in the form of compounds called ores.Metals…

Q: (а) Give an example of zone refining of metals. (b) What is the role of cryolite in the metallurgy…

A: Metallurgy is the process which is more concern with the extraction and isolation of metals from its…

Q: The metals Mg and Al, like most metals in groups 1A, 2A, and 3A of the periodic table, cannot be…

A: Less-reactive metal such as iron may be extracted by reduction with carbon or carbon monoxide. The…

Q: Why are metals resposbile for the production of colour upon heating

A:

Q: is kalburo (calcium carbide) can be mix in fermented cow dung to generate fire?

A: Given : Kalburo is added in cow dung to generate fire.

Q: (a) Write the principle of electrolytic refining.(b) Why does copper obtained in the extraction from…

A: Write the principle of electrolytic refining.

Q: List the properties of copper that make it appropriate for electric wires?

A: Copper is a metal which is commonly used for making electric wires. This is because of the following…

Q: Describe the role of the following :(i) SiO2 in the extraction of copper from copper matte(ii) NaCN…

A: Introduction- Metallurgy is the branch of chemistry that deals with mining of metals and their…

Q: Why is it important to use an inert atmosphere to surround the metal when arc-melting titanium?

A: Since high temperature and the flow of electrons would cause the metal to oxidize in a normal…

Q: What is the function of collectors in the froth floatation process for the concentration of ores?

A: Various processes are used for extraction of minerals. These minerals are very useful for…

Q: Describe the Mond process?

A: Mond process is used for refining nickel. This process takes place at very high temperatures.

Q: Why is vanadium present in oil from some sources?

A: Vanadium is an element having atomic number 23. The atomic symbol of vanadium is V. It is a…

Q: What is the role of NaOH in the metallurgy of aluminium?

A: Given: The extraction of aluminium is done from its ore called bauxite, Al2O3.2H2O. There are…

Q: What is the basic principle of zone refining of metals?

A: In nature,metals are not found in pure form . They exist in the form of compounds called ores.Metals…

Q: What is the disadvantage of soda-lime glass?

A: Given: To explain the disadvantage of soda-lime glass

Q: Hydrogen peroxide when exposed to light reduces to acetic acid.  True  False

A: Which one is correct

Q: Why was HCl added for the flame test of barium?

A: Interpretation: To explain why HCl was added for the flame test of barium.

Refining of Crude Metal

Metallurgy could be defined as a technique by which metals can be extracted in their pure nature. Extractive metallurgy directs with the route of eradicating the valuable metals from ores and purifying the extracted metals to pure nature. In hydrometallurgy, the metal extraction’s from their ores is done using an aqueous solution. In the pyrometallurgical process, high temperatures are employed to initiate the reactions between gases, molten metals, and solids. In electrometallurgy, the technique is carried in an electrolytic cell.