Any kind of processes which result into a change of state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc) as a result of a stimulus by the chemical structure of the anion portion in a dissociated acid (rather than the direce acid acting as a proton donor) involves acid chemical in gaseous, liquid or solid type of form.
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus by the chemical structure of the anion portion of a dissociated acid (rather than the acid acting as a proton donor). The acid chemical may be in gaseous, liquid or solid form.