Why is it important to know the reactions of alkali and alkaline metals in metallurgical processes?

Q: 17. Which of the following pairs of oxides will react with both dilute acid and alkali to form…

A: This is an acid base reaction

Q: Why do Selenium and tellurium occur in rare minerals?

A: The reason why Selenium and tellurium occur in rare minerals has to be given,

Q: Calcium metal is obtained by direct electrolysis of molten CaCl2. If a metallurgical electrolysis…

A: In CaCl2 we have Ca2+ metal ion  hence to convert it into Ca metal, the reaction occurring will be…

Q: Explain why iron and manganese exist in the lower oxidation states at the bottom of large eutrophic…

A:

Q: What is the colour of FeSO4.7H2O crystals? How does this colour change upon heating? Give balanced…

A: The chemical formula of ferrous sulphate heptahydrate is FeSO4.7H2O and it can be also called as…

Q: Describe the preparation of potassium permanganate. How does the acidified permanganate solution…

A: The chemical name of Potassium permanganate is KMnO4. It is an inorganic compound and dark violet in…

Q: (i) Name the method of refining of metals such as Germanium.(ii) In the extraction of Al, impure…

A: Refining is a process of eliminating impurities to obtain metals of high purity. These impurities…

Q: How does the basicity of SnO2 in water compare with that of CO2? Explain.

A: The basicity of SnO2 in water has to be compared with carbon dioxide.

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: Cite and explain three reasons why ferrous alloys are used so extensively.

A: Three reasons why ferrous alloys are used so extensively have to be explained below.

Q: 7) Calcium metal is obtained by direct electrolysis of molten CaCl2. If a metallurgical electrolysis…

A: Ca2+ + 2e- => Ca.  This shows that 2 mole of electrons is needed for one mole of calcium.  1 mole…

Q: What chemical process is used for obtaining a metal from its oxide?

A: The chemical process used for obtaining metal from its oxide:

Q: Name the following compounds and assign oxidation states to the halogens in them HClO2

A: Oxidation states of halogens: HClO2,

Q: How the ns2np5 configuration accounts for halogen reactivity with metals

A: The reactivity of halogens with metal has to be explained.

Q: What are the possible reactions for the reaction of Aluminum with HCL and Water ? And what is the…

A: Aluminum reacts with HCl and water.We have to write the possible reactions and identify the…

Q: Calcium metal is obtained by direct electrolysis of molten CaCl2. If a metallurgical electrolysis…

A:

Q: Write the role of the following: (i) CO in the purification of nickel (ii) Graphite rod in the…

A: The Mond’s process is used for the purification of nickel. This process is also called as carbonyl…

Q: The electrolysis of GaBr3 at high temperature produces gallium metal. If a constant electrical…

A:

Q: Which of the following pairs of oxides will react with both dilute acid and alkali to form salts? A…

A: We know that Oxides that have amphoteric nature react with both acids and bases.

Q: Elemental Li and Na are prepared by electrolysis of a molten salt, whereas K, Rb, and Cs are…

A: a) Aqueous salt solutions are mixtures of ions and water. When two half-reactions are possible at an…

Q: Why are sulphide ores converted to oxide before reduction?

A: The main principle of conversion of ores into respective metal is that ores must be changed into…

Q: Which is an industrial reducing agent frequently used to reduce iron from its ore? O Oxygen O…

A: Answer: Iron is found in nature in form of oxide ores. During the reduction process we take off this…

Q: what is common oxidation state of lanthanides? and why ?

A: The general electronic configuration of lanthanides is [Xe]4fn5d0-16s2.Lanthanides have incomplete…

Q: Why does the reactivity of the alkali metals decrease from cesium to lithium?

A: The alkali earth metal include: Li, Na, K, Rb and Cs. They have a valence electron configuration…

Q: Why lower oxidation states is more stable  than higher oxidation states for heavier p block…

A: All known elements are placed in the Modern periodic table in increasing order of their atomic…

Q: In iron smelting, what are the possible chemical equations that will involve CaO if CaO is part of…

A:

Q: What is metallic glass? Describe the features that promote high glass-forming ability in metals.

A: Metallic glass: It is an amorphous metal alloy. The atoms in the materials are decorated by…

Q: What is the concentration in parts per million of a 0.00175% w/v solution of mercuric nitrate?

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: Under what conditions is the FeO42- ion thermodynamically stable in aqueous solution?

A:

Q: Write a balanced ionic equation to represent the oxidation of iodide ion (I- ) by permanganate ion…

A: the redox couples are divided into two half-reactions: one for the oxidation, and one for the…

Q: In large atoms, the lanthanide contraction is characterized by stabilization of the s and p orbitals…

A: Large atoms like Tl, Pb, Bi, Hf, Ta etc. Lanthanide contraction is observed.  These contains filled…

Q: Magnesium metal can be produced via the electrolysis of molten magnesium chloride harvested from…

A: a.) The molten MgCl2 contain two type of ions Mg2+ and Cl-. The magnesium ions undergo reduction to…

Q: Although thermodynamically feasible, in practice, magnesium metal is not used for reduction of…

A: The objective of the question is to explain the reason that although thermodynamically feasible in…