What kind of solution would have a K a value that is much less than one?

A solution with a ( K_a ) value much less than one is typically a weak acid in equilibrium with its ions. This indicates that the acid does not dissociate significantly in water, resulting in a low concentration of hydrogen ions compared to the undissociated acid. Consequently, the solution has a higher pH and is less acidic. Examples include acetic acid and formic acid, which partially ionize in solution.