What is compound Z?
`CH_(3)CH_(2)CH_(2)Br overset(NaCN)rarr X overset(H_(3)O^(+))underset("heat")rarr Y overset(CH_(3)CH_(2)OH)underset(H^(+))rarr Z`

Options

A. `Mg_(3)N_(2)`
B. `NH_(3)`
C. `MgO`
D. `Mg(NO_(3))_(2)`

Answer

A

Explanation

`(NH_(4))_(2)Cr_(2)O_(7) overset(Delta)(rarr)N_(2)+Cr_(2)O_(3)+H_(2)O`
`(NH_(4))_(2)Cr_(2)O_(7)+NaCl+Conc H_(2)SO_(4) overset(Delta)(rarr)`
`CrO_(2)Cl_(2) uarr overset(NaOH)(rarr)Na_(2)CrO_(4)`
`N_(2)+Mgoverset(Delta)(rarr)Mg_(3)N_(2) overset(H_(2)O)(rarr)NH_(3)`
`H_(2)O`+anhydrous `CuSO_(4)rarr` Blue vitriol.