The Haber process can be represented as follows

Explanation

a. `CaO+H_(2)O rarr underset((A))(Ca(OH)_(2))`
b. `NH_(3)+H_(2)O+CO_(2)rarr underset((B))(NH_(4)HCO_(3))`
c. `2NaHCO_(3) rarr underset((C ))(Na_(2)CO_(3))+CO_(2)H_(2)O`
d. `NH_(4)HCO_(3)+NaCI rarr NaHCO_(3)+underset((D))(NH_(4)CI`
e. `2NH_(4)CI+Ca(OH)_(2)rarr 2NH_(3)+2H_(2)O+underset((E ))(CaCI_(2))`
Thus, `A=Ca(OH)_(2), B=NaHCO_(3), C=Na_(2)CO_(3), D=NH_(4)CI` and `E=CaCI_(2)`.