How do I write a net ionic equation for the reaction of iron(III) chloride and potassium thiocyanate?

Question

Also, how do I write the equilibrium expression for this reaction?

Answer 1

Fe3+ + SCN- <----> [FeSCN]2+ is a simple way of doing it.

Now just write product on the top, and reactants on the bottom, like any other Kc expression.