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Q. What is the Electrometallurgy?
The above two metallurgical processes, namely pyrometallurgy and hydrometallurgy can be used in the extraction of a fairly large number of metals. These processes, thus, cannot be used in cases:
In these cases, metals can be extracted by electrolysis of their salts in molten state. Thus, magnesium and sodium are generated by electrolysis of fused chlorides, where the metals re Iiberated at the chlorine and cathode gas is evolved at the anode. Given reactions take place in the mean while electrolysis:
Anode: 2Cl- ---------> Cl2 (g) + 2e
Cathode: 2Na+ 2e ------> 2Na (l)
Mg2+ + 2e---------------> Mg (l)
Physical Properties - Alkenes (i) Alkenes are odourless and colourless. (ii) Alkenes are soluble in organic solvents and insoluble in water. (iii) Physical state of Alken
Draw out the Lewis structures of the following two compounds. BeCl 2 + 2Cl- → (a) Determine which compound is the Lewis acid and which is the Lewis base. What are the
The shape of P -orbital is : (1) Elliptical (2) Spherical (3) Dumb-bell (4) Complex geometrical Ans: Dumb-bell
Methods of showing concentrations of solutions The concentration of a solution can be provided in various ways. (A) Percent by mass (B) Molarity (C) molality (D) Mo
Neutrons are found in atoms of all elements except in: (1) Chlorine (2) Oxygen (3) Argon (4)Hydrogen Ans: Hydrogen
Q. What do you know about Chemical Equilibrium Many chemical changes are reversible and will proceed towards an equilibrium instead of going to completion. The products react w
Raising heavy weights by water pressure Get a rubber hot-water bottle. Put a one- hole stopper carrying a short glass tube tightly in the neck. Punch a hole in the bottom of a
what are limitations of nerst distribution law
What are gredients for chemical and physical properties in lactic acid?
A student wishes to prepare 250ml of a 0.20mol/L solution of oxalic acid (COOH)2.2H2O. a) Calculate the amount (no.of moles) of oxalic acid required. b) Calculate the mass of oxali
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