Question

: How is ethanoic acid prepared by continuous etherification process?
What are valence band and conduction band?​

Answer 1

Explanation:

Methylmagnesiumbromide reacts with solid carbondioxide (dryice) to form a magnesiumsaltofcarboxylicacid. This on acidification gives ethanoicacid.

Answer 2

Answer:

Excess of ethanol is distilled with conc sulphuricacid at 413 K to give ddiethylether

(see the attachment)

Experimental process: Equal volumes of ethanol and conc. sulphuricacid are kept in distillation flask. Ethanol reacts with conc. sulphuricacid to give ethyl:hydrogensulphate. Then excess ethanol is added to distillation flask, which then reacts with ethyl:hydrogensulphate to form diethylether.

The diethylether produced distills over. sulphuricacid is regenerated in second step and is reused in first step. Hence, small amount of sulphuricacid converts large amount of Ethanol into diethylether and the process becomes continuous. Hence, the process is named continuous etherification process.