On dropping a small piece of sodium in a test-tube containing carbon compound ' X ' with molecular formula C2H6O, a brisk effervescence is observed and a gas ' Y ' is produced. On bringing a burning splinter at the mouth of the test-tube the gas evolved burns with a pop sound. Identify ' X ' and ' Y '. Also write the chemical equation for the reaction. Write the name and structure of the product formed, when you heat ' X ' with excess conc. sulphuric acid.