How can we obtain boron, Chemistry

Assignment Help:

Q. How can we obtain Boron?

Boron is- obtained by the red-action of B2O3 with magnesium or sodium B203 is first prepared by strongly katingH3B03 which is obtained by the action of HCI or H2S04 - on a concentrated solution of borax:

NA2B4O7 + 2HCl + 5H2O------------------> 4H3BO3+ 2NaCl

2H3BO3---------------------------------> B2O3+ 3H2O

B2O3+ 3Mg------------------------------> 2B + 3MgO

Pure crystalline boron may be obtained in small quantities by the reduction of BBr3, with H2 on a heated tantalum metal filament at 1275-1475 K.


Related Discussions:- How can we obtain boron

Various tests involved in sensory evaluation of foods, Q. Tests for sensory...

Q. Tests for sensory evaluation? Tests for sensory evaluation are of three types: • Difference testing - This is the sensory testing designed to determine whether detectabl

Hypothetical variation, Read the recent tribunal case  Taylor v Archicentre...

Read the recent tribunal case  Taylor v Archicentre Ltd   (General) [2012] NSWCTTT 348 (a)       Provide a summary account of the key material facts concerning the architectu

Ideal gas, what will be presure if tempreture is -73?

what will be presure if tempreture is -73?

Conductance and conductivity, Conductance and conductivity: When a fiel...

Conductance and conductivity: When a field (electric) is put across an aqueous ionic solution by applying a voltage between two parallel plate electrodes, the cations are attra

Chemical properties proteins - oxidation, Chemical Properties Proteins - Ox...

Chemical Properties Proteins - Oxidation Oxidation : Proteins are oxidised on putrefaction and burning. The products comprise amines, nitrogen, carbon dioxide and water. The un

What is the methyle orange formula?, Methyl orange is a pH indicator often ...

Methyl orange is a pH indicator often used in titrations. It''s chemical formula  is C 14 H 14 N 3 NaO 3 S

Hydrogen-atom, If hydrogen atom is in an energy level represented by n=4,ho...

If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e  [ (n 2- n 1 +1)

Binary compounds: simple structures, Coordination number and geometry ...

Coordination number and geometry   Binary compounds are ones with two different elements present. 'Simple' crystal structures can be classed as ones in which each atom (or

Free radical mechanism, define free radical mechanism of additon reaction

define free radical mechanism of additon reaction

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