Question

Write chemical reactions for the preparation of nitrobenzene from acetylene.


plsss ans fast.

Answer 1

Answer:

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Answer 2

Acetylene is an alkyne with the formula C2H2, it can be converted to Benzene easily by means of a process similar to addition polymerization.

Benzene has formula C6H6.

First, ethene is passed through a red hot iron tube at temperature of 873 K and high pressure.

            Red hot iron

3C2H2-----------------> C6H6

              873 K

Now, benzene has to be converted to Nitrobenzene by nitration with concentrated HNO3 in the presence of concentrated H2SO4.

      conc. H2SO4/conc.HNO3( 323-333 K)

C6H6-----------------------------------------------> C6H5NO2 (Addition of Nitro group)

Hence, Nitrobenzene is obtained from acetylene by addition polymerization at high pressure and high temperature followed by nitration.