Is iron(III)nitrate changed and if so how?
If a stoichiometric amount of $\ce{SCN-}$ is added then the reaction is mostly

$$\ce{Fe^3+(aq) + SCN-(aq) &lt;=&gt;Fe(SCN)^2+(aq)}$$

If an excess of of $\ce{SCN-}$ is added then the reaction is mostly

$$\ce{Fe^3+(aq) + 2SCN-(aq) &lt;=&gt;[excess SCN-] Fe(SCN)2^+(aq)}$$