X' is a compound used in cough syrups and in many tonics. It is soluble in `H2O`
i) Name the compound X. Write its chemical forumula.
ii) Which gas is evolved when compound X reacts with Sodium? How will you test the chemical equation involved in the reaction of X with sodium.
iii) Complete the following equation for X and identify Y.
`X overset("heat")(rarr)Y`.

Explanation

i] The compound .X. is ethanol its chemical formula is `CH_3 - CH_2OH [C_2H_5OH]`
ii] Hydrogen gas is evolved when ethanol reacts with sodium. On bringing a burning matchstick near to the gas, it burns with a pop sound. The equation is 
`2C_2H_5OH + 2Na to 2 C_2H_5O^(-)Na^(+) + H_2 uarr`
iii] `underset(X)(CH_3CH_2OH)underset("Heat")overset("Alk KMnO_4)(rarr) underset(Y)(CH_3COOH)`
The compound .Y. is ethanoic acid.