Final answer:
The net ionic equation for the reaction of hydrochloric acid with nickel is Ni(s) + 2H+(aq) → Ni2+(aq) + H2(g), which shows nickel reacting with hydrogen ions to form nickel ions and hydrogen gas.
Step-by-step explanation:
The question asks for the net ionic equation for the reaction of hydrochloric acid with nickel. In chemical reactions, especially those occurring in aqueous solution, net ionic equations are used to show only the species that actually change during the reaction.
Nickel (Ni) reacts with hydrochloric acid (HCl) to produce nickel chloride (NiCl2) and hydrogen gas (H2). The balanced chemical equation for this reaction is:
Ni(s) + 2HCl(aq) → NiCl2(aq) + H2(g)
In solution, hydrochloric acid dissociates into hydrogen ions (H+) and chloride ions (Cl−). Since nickel is a metal, it won't form ions until it reacts. The net ionic equation for this reaction is therefore:
Ni(s) + 2H+(aq) → Ni2+(aq) + H2(g)
This equation shows the solid nickel reacting with the hydrogen ions to produce aqueous nickel ions and hydrogen gas.