Question

What happens to the H⁺ ions, of the solution, when an acid is neutralised?

Answer 1

When a base is added to an acid, it nullifies the effect of the acid and removes the H⁺ ions from it and turns them into water. During a neutralisation reaction, the H⁺ ions of an acid are converted into water.
The reaction can be represented as follows.
                   Acid + Base → Salt + Water
 For example, when sodium hydroxide is treated with hydrochloric acid, sodium chloride and water are produced.
                 NaOH(aq) + HCl(aq) →  NaCl(aq) + H₂O(l)