Doubt & Answer Explanation

Answer Explanation

There are tens of criteria for determining which compound will be more acidic and which compound is more basic. Therefore we cannot make a generalized statement and comment on the acidic strength of groups of compounds in general.

The strength of an acid refers to its ability or tendency to lose a proton. A strong acid is one that completely dissociates in water; in other words, one mole of a strong acid HA dissolves in water yielding one mole of H⁺ and one mole of  A^?, with no acid HA remaining as such without dissociation. In contrast a weak acid only partially dissociates and at equilibrium both the acid and the ions H⁺ and A^- are present.

HCl is a strong acid because it dissociates completely to produce H⁺ and Cl^- ions.

The strength of a base refers to its ability or tendency to lose an OH^- group . A strong base is one that completely dissociates in water; in
other words, one mole of a strong acid XOH dissolves in water yielding
one mole of OH^- and one mole of  X⁺, with no base XOH remaining as such
without dissociation. In contrast a weak base only partially dissociates
and at equilibrium both the base and the ions OH^- and X⁺ are present.

KOH is a strong base because it dissociates completely to produce OH^- and K⁺ ions.