Question

what is meant by the acidity of a base

Answer 1

In chemistry, acids and bases have been defined differently by three sets of theories. One is the Arrhenius definition, which revolves around the idea that acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (H+) ions while bases produce hydroxide (OH-) ions in solution.

Answer 2

hey mate ur ans
number of replaceable hydroxyl (OH) ions present in one molecule of base is known as acidity of a base.
eg: NaOH➡Na+OH : ACIDITY = 1
Ca(OH)2➡Ca2+2OH : ACIDITY = 2
hope it helps.