A negative pka value indicates which of the following? A Weak base (B. Strong base Weak acid D Strong acid

The correct option is: D. Strong acid

Explanation:

The acid dissociation constant, also called the acid-ionization constant, is the strength of a given acid in a solution. It is a quantitative property which is denoted by the symbol Ka.

The negative logarithm of the acid dissociation constant i. e. the Ka value is equal to pKa.

pKa = - log Ka, where pKa and Ka are inversely proportional.

Therefore, for a strong acid, the acid dissociation constant, Ka is very large positive value and pKa is a negative value (pKa < 0).