Chemistry, asked by janeeshhgowda1p3y53i, 1 year ago

How is ethane converted to ethane 1,2 diol

Answers

Answered by rahulgupta100008

Ethanol can be made by reactingethene (from cracking crude oil fractions) with steam. A catalyst of phosphoric acid is used to ensure a fast reaction. Notice that ethanol is the only product. The process is continuous – as long as ethene and steam are fed into one end of the reaction vessel, ethanol will be produced.

janeeshhgowda1p3y53i: Can u simplyfy

rahulgupta100008: i try

janeeshhgowda1p3y53i: Kkk

rahulgupta100008: Ethene added to oxygen gives epoxyethane which on reacting with water gives ethane 1,2 diol

rahulgupta100008: First, dehydrate ethanol to make ethylene

CH3-CH2-OH ----- concentrated H2SO4 -----> CH2=CH2 + H2O

Ethene can then be catalytically oxidised to the epoxide (three membered ring with an O in it) ethylene oxide

2 CH2=CH2 + O2 ----- Ag catalyst / 250 °C -----> 2 C2H4O

rahulgupta100008: Ethylene oxide can then by hydrated to form the required diol

C2H4O + H2O -----> HO-CH2-CH2-OH

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The diol can also be produced in a much less environmentally friendly way directly from ethylene by processes such as:

CH2=CH2 ----- cold dilute alkaline KMnO4 -----> HO-CH2-CH2-OH

CH2=CH2 ----- OsO4 / H2O2 -----> HO-CH2-CH2-OH

rahulgupta100008: Answers

Ethane-1 2-diol

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