Write the reactions involved in Williamson synthesis of 2-ethoxy-3-methylpentane, starting from ethanol 

Explanation

`CH_3CH_2OHunderset(-SO_2,HCl)overset(+SOCl_2)(rarr)CH_3CH_2Cl(X)`
`CH_3-overset(OH)overset(|)(CH)-underset(CH_3)underset(|)(CH)-CH_2-CH_3underset(-H_2)overset(+Na)(rarr)CH_3-overset(ONa)overset(|)(CH)-underset(CH_3)underset(|)(CH)-CH_2-CH_3(Y)`
`X+Y overset(S_N2)(rarr)CH_3-overset(OC_2H_5)overset(|)(CH)-underset(CH_3)underset(|)(CH)-CH_2-CH_3`