Answer:
2 moles of ammonium ions required to combine with 1 mole of oxalate ion to form ammonium oxalate.
Explanation:
Ammonium cation= [tex]NH_4^+[/tex]
Oxalate anions = [tex]C_2O_4^{2-}[/tex]
By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound as shown in the image attached.
The ionic compound that formed when ammonium ion and oxalate ions combine is ammonium oxalate.
[tex]2NH_4^++C_2O_4^{2-}\rightarrow (NH_4)_2C_2O_4[/tex]
2 moles of ammonium ions required to combine with 1 mole of oxalate ion to form ammonium oxalate.
