Question

1) When solid Fe metal is put into an aqueous solution of NiSO4, solid Ni metal and a solution of FeSO4 result. Write the net ionic equation for the reaction.



2)When aqueous solutions of sodium fluoride and hydroiodic acid are mixed, an aqueous solution of sodium iodide and hydrofluoric acid results. Write the net ionic equation for the reaction.

Use H+ for the hydronium ion.