Neutralisation
The reaction between an acid and a base to form a salt plus water. is the reaction between the hydrogen ions in an acid and the hydroxide ions in an alkali to produce water. The ionic equation for neutralisation is (higher tier):
H+(aq) + OH-(aq) → H2O(l)
Neutralisation is an exothermic reaction – one in which heat is given out. The maximum temperature is reached when the acid solution is completely neutralised by the alkali.
Acids and bases
A A substance that reacts with an acid to neutralise it and produce a salt and water. is a metal oxide or metal hydroxide that neutralises an acid to produce a salt and water. An alkali is a soluble base.
All alkalis are bases, but only soluble bases are alkalis.