The Reaction Between Nickel and Hydrochloric Acid Having conducted an investigation involving multiple metals, I have found that nickel refuses to react with concentrated hydrochloric acid. I have even left the reaction overnight and still have seen no mass change in the solid piece of nickel. Is the reaction simply extremely slow or does it not react despite being above hydrogen in the reactivity series?
Try 30% and heat it to 80C. All of the chloride should be exhausted after a day or less. You can then evaporate the solution to generate crystals of nickel chloride. Any work with nickel compounds should always be done in a well-ventilated hood.