Identify (Z) in the following reaction series `:`
Ethanol `overset(PCl_(5))(rarr)(X)overset("Alc. KOH")(rarr)(Y) underset(H_(2)O,"heat") overset(H_(2)SO_(4),"r o om temp.)(rarr)(Z)`

Options

A. `C_(2)H_(4)`
B. `CH_(3)CH_(2)OH`
C. `CH_(3)CH_(2)OSO_(3)H`
D.

Answer

B

Explanation

`underset("Ethanol")(CH_(3)CH_(2)OH)overset(PCl_(5))to underset((X))(CH_(3)CH_(2)Cl) underset(-HCl)overset("alc. KOH")to underset((Y))(CH_(2)=CH_(2)) underset((ii)" "H_(2)O,heat)overset((i)" "H_(2)SO_(4),r.t.)to underset(("Ethanol (Z)")(CH_(3)CH_(2)OH)`