What acid is not a strong acid?

Answer 1

The strength of an acid does not depend on how corrosive it is but by the degree to which it dissociates in water.

A strong acid completely dissociates into ions, producing hydrogen (H+ ions) and negative ions that depends on the particular acid (HCl --> H+ + CL-, HNO3 -- H+ + NO3-).

A weak acid only partially dissociates.

The strong acids are:

Hydrochloric acid (HCl)

Hydrobromic acid (HBr)

Hydroiodic acid (HI)

Nitric acid (HNO3)

Sulfuric acid (H2SO4)

Perchloric acid (HClO4)

Some lists also include periodic acid (HIO4) and chloric acid (HClO3) as strong acids.

All other acids are assumed to be weak.

Answer 2

Acetic acid (CH3COOH) is not a strong acid. It is a weak acid that partially dissociates in water, meaning it does not completely ionize.