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Q. How can we obtain Pure alumina?
Pure alumina is obtained from bauxite ore. Powdered bauxite mineral is heated in a concentrated solution of sodium hydroxide under pressure when alumina and silica get dissolved:
Al203 + 2NaOH + 3H20---------------------------------> 2 NaAI(OH)4
Si02 + 2NaOH ------------------------------------------> Na2Si03 + H20
Q. Define about Crystal Field Theory? This theory is based on two main assumptions. First, all the ligands are considered as point (negative) charges. It means that the size an
An open test tube at 293 K is filled at the bottom with 24.2 cm of Hg, and 11.2 cm of water is placed above the Hg. Calculate the pressure at the bottom of the test tube if the at
why didnt all the noble metals get rust even they have high electrode potentials? Ans) for e.g if you look at gold it is highly reactive with greater negativity of gibbs free ener
Predict the regiochemistry and stereochemistry of the following cycloaddition reactions and indicate the basis for your prediction.
Why lithium and beryllium markedly differ from other members of their respective groups?
WHAT IS THE FEROST DIAGRAM
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The order of reaction is the number of moles whose concentrations verify the rate of a reaction at a given temperature
preparations of hydroquinone
d block elements cofiguration
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