Answer any FOUR of the following questions.
b. How do you prepare methoxy ethane by Williamson's ether synthesis?

Explanation

Alkyl halides on heating with alkoxide in alcoholic medium gives ethers. This reaction is called Williamson ether synthesis.
`R - O"na" + X - R^(1) underset(S_(N)^(2) ) overset(Delta) (to) R - O - R^(1) + NaX`
For example, `underset("Sodium ethoxide")(CH_(3) CH_(2)) "ONa" underset("Methyliodide")(+ I - CH_3) underset(Delta) overset(S_(N)^(2) ) (to) CH_(3) underset("ethyl methyl ether")(CH_(2) - O- CH_(3)) + "NaI"`