Question

A compound X on heating gives X.Y decolourises bromine water and undergoes addition reaction . Y is also used in making polythene . identify X and Y. write its chemical eqution faster pls

Answer 1

details are not complete

Answer 2

Compound X is ethanol and Y is ethene.

Ethanol on heating in presence of concentrated H2SO4 gives ethene as product.

Ethene can decolourise bromine water as it undergoes addition reaction, which is a test for unsaturated hydrocarbons.

Monomeric units of ethene combine to form polyethene due to it's unsaturated nature.

Reaction for conversion of X into Y is given below -

C2H5OH ---> CH2=CH2 + H2O

C2H5OH is ethanol

CH2=CH2 is ethylene

H2O is water

The reaction occurs by heating in presence of concentrated H2SO4.

CH2=CH2 + Br2 --> (CCl4) --> Br-CH2-CH2-Br

CH2=CH2 is ethylene

Br2 is bromine water which is formed in presence of carbon tetrachloride.

Br-CH2-CH2-Br is

1,2-dibromoethane.