What is a neutralisation reaction? Give two examples.
A neutralisation reaction is the reaction between an acid and a base to give a salt and water. In this reaction, the effect of a base is nullified by an acid and vice-versa. The general equation for this reaction is: Base + Acid → Salt + Water.
One example of a neutralisation reaction is the reaction between sodium hydroxide and hydrochloric acid, represented by the equation: NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l).
Another example is the ionic reaction where hydrogen ions and hydroxide ions combine to form water: H⁺(aq) + OH⁻(aq) → H₂O(l).
Explanation
The answer is derived directly from the textbook definition provided in the context. The text explicitly defines neutralisation as the reaction between an acid and a base to form salt and water. It provides the specific chemical equation involving NaOH and HCl as a primary example. Additionally, the context offers the ionic perspective (H+ + OH- -> H2O) as a way to view the neutralisation reaction, which serves as a valid second example based strictly on the provided text.