Answer: sodium and sulphate ions.
Explanation:
Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.
The given chemical equation is:
[tex]2Na_3PO_4(aq)+3CoSO_4(aq)\rightarrow 3Na_2SO_4(aq)+Co_3(PO_4)_2(s)[/tex]
The ionic equation is:
[tex]6Na^+(aq)+2PO_4^{3-}(aq)+3Co^{2+}(aq)+3SO_4^{2-}(aq)\rightarrow 6Na^+(aq)+3SO_4^{2-}(aq)+Co_3(PO_4)_2(s)[/tex]
The ions which are present on both the sides of the equation are sodium and sulphate ions and hence are spectator ions.
