what is reaction product when ethene is treated with steam using phosphoric acid as catalyst at 300 degrees celcious

4 answers

Your subject is not physics.
thn wat is it
Read my subject.

Then read this:
http://www.chemguide.co.uk/physical/equilibria/ethanol.html

There are, of course, other ways to make ethanol (ethyl alcohol). I was not aware of this one.
drwls is right. The product is ethanol.
By the way, note the correct spelling of celsius.