Middle oil of coal tar distillation, Chemistry

Assignment Help:

Middle oil of coal-tar distillation comprise naphthalene and phenolic elements. Phenolic compounds are isolated in subsequent steps.

Step a: Middle oil is washed along with H2SO4. It dissolves basic impurities such as pyridine (base).

Step b: Extreme cooling separates naphthalene (a low melting solid)

Step c: Filtrate of step b is treated with aqueous NaOH when phenols dissolve as phenoxides. Carbon dioxide is then given by the solution to liberate phenols.

Step d: Crude phenol (of step c) is subjected to fractional distillation.


Related Discussions:- Middle oil of coal tar distillation

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

Homogeneous reaction, You are given the following data taken in several run...

You are given the following data taken in several runs in a mixed flow reactor: where - r A is the measured rate of disappearance of component A, and C A is the concen

Determine the concentration of hydroxide ion in this buffer, In lab, buffer...

In lab, buffers solution based onto a 0.1 M solution of sodium phosphate at pH7.0.  Within this system, there are three of pK A s like:  12.7, 7.21 and 2.12. Determine the conce

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

Visible range of hydrogen spectrum will contain, Visible range of hydrogen ...

Visible range of hydrogen spectrum will contain the following series: (1)  Pfund (2) Lyman (3) Balmer (4) Brackett Ans: Balmer

Actinide, what are ionization energy of actinides?

what are ionization energy of actinides?

Ethyl group in the most stable or not, The propyl group on carbon-4 has to ...

The propyl group on carbon-4 has to be gauche to either the ethyl group or the isopropyl group. Due to the isopropyl group is larger, the propyl group is gauche to the ethyl group

General principles for naming organic compounds, General principles for nam...

General principles for naming organic compounds In the general system, all the isomeric alkanes (having similar molecular formula) have the the same parent name. The names of

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