* Nitric acid is a strong oxidizing agent: It tends to oxidize metals, but nickel is relatively unreactive with nitric acid, especially in dilute solutions.
* Nickel chloride is a salt: It is a stable compound and not easily oxidized by nitric acid.
Possible Outcomes:
* No Reaction: In most cases, the two solutions will simply mix together, with no visible reaction occurring.
* Very Slow Oxidation: If the nitric acid is very concentrated and hot, a very slow oxidation of the nickel chloride may occur, but this is unlikely.
Important Note: While there's no direct reaction, adding nitric acid to a nickel chloride solution might slightly change the acidity of the solution.