NH_(4)CI +Na_(2)HPO_(4)+4Z rarr underset(("sparingly soluble salt"))(A)+ NaCI A overset(Delta)rarr A' +4Z A' overset(Delta)underset("High" T)rarr X+Y uarr +Z Compound (Z) is a neutral oxide and turns anhydrous CuSO_(4) blue. Gas (Y) is a basic gas which can also be obtained by treating ammonium sulphate with lime water. sequences mentioned above involve balanced reactions. Formula of (A) is:

NH_(4)CI +Na_(2)HPO_(4)+4Z rarr underset(("sparingly soluble salt"))(A

1.	NH_(4)CI +Na_(2)HPO_(4)+4Z rarr underset(("sparingly soluble salt"))(A)+ NaCI A overset(Delta)rarr A' +4Z A' overset(Delta)underset("High" T)rarr X+Y uarr +Z Compound (Z) is a neutral oxide and turns anhydrous CuSO_(4) blue. Gas (Y) is a basic gas which can also be obtained by treating ammonium sulphate with lime water. sequences mentioned above involve balanced reactions. Formula of (A) is:
Answer» `Na_(2)(NH_(4))PO_(4).4H_(2)O` `Na(NH_(4))HPO_(4).4H_(2)O` `Na(NH_(4))_(2)PO_(4).4H_(2)O` `(NH_(4))_(2)HPO.4H_(2)O` Solution :`Z RARR H_(2)O, A rarr Na(NH_(4))HPO_(4).4H_(2)O, X rarr NaPO_(3)` `Y rarr NH_(3),A' rarr Na(NH)_(4)HPO_(4)`