How can we obtain pure alumina, Chemistry

Assignment Help:

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


Related Discussions:- How can we obtain pure alumina

2nd law of thermodynamics, Initially 5 mol of an ideal gas with Cv,m=12.5 J...

Initially 5 mol of an ideal gas with Cv,m=12.5 J K^-1 mol^-1 are at a volume of 5 dm^3 and a temperature of 300K. If the gas is heated to 373 K and the volume changed to 10 dm^3, w

Why electrolysis of aqueous solution of nacl, Explain why electrolysis of a...

Explain why electrolysis of aqueous solution of NaCl gives H 2 at cathode and Cl 2 at anode. Write overall reaction

What are the advantages of cold working, What are the Advantages of cold wo...

What are the Advantages of cold working (i) No heat is required. (ii) Better surface finish is obtained. (iii) Superior dimension control. (iv) Improved strength and h

Caustic embrittlement, Caustic Embrittlement: Caustic embrittlement is a t...

Caustic Embrittlement: Caustic embrittlement is a type of boiler corrosion caused by using highly alkaline water in the boiler. During softening process by lime-soda processes, fr

Determine the height difference, Approximate the torque and power necessary...

Approximate the torque and power necessary to rotate the inner 20 cm diameter cylinder shown in Figure 1. SAE 10W-30 oil at 20°C fills the gap. Assume a linear velocity profile.

Show the oxoacids of sulphur, Q. Show the Oxoacids of Sulphur? As you k...

Q. Show the Oxoacids of Sulphur? As you know, oxoacid is an acid in which the ionisable hydrogen atom is bonded, through an oxygen atom to the central nonmetal atom, e.g., E-OH

Organic, properties and uses of glycol?

properties and uses of glycol?

Name the three ways in which consumer testing can be done, Q. Name the thre...

Q. Name the three ways in which consumer testing can be done? The three ways by which consumer testing can be done are: inhouse laboratory testing, home testing and institution

Dicarboxylic acids, Dicarboxylic acids The acids consisting of two carb...

Dicarboxylic acids The acids consisting of two carboxylic groups are known as dicarboxylic acids. The saturated dicarboxylic acid are denoted by the general formula 2n (COOH

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd