Whether barbituric acid is a strong acid
The strength of the acid is related to the difficulty of dissociating hydrogen ions in water. Now if you want to discuss whether barbituric acid is a strong acid, you should study its properties and dissociation.

Strong acids are almost completely dissociated in water, releasing a large number of hydrogen ions, and their acidity is very strong. The molecular structure of barbituric acid has specific chemical bonds and functional groups. When placed in water, although hydrogen ions can be dissociated, the degree of dissociation is limited and it is not nearly complete.

The reason is that in the molecular structure of barbituric acid, the binding effect of some chemical bonds and functional groups on hydrogen ions cannot be underestimated. This binding force makes it difficult for hydrogen ions to completely break away from the molecular structure, thus limiting the degree of dissociation in water.

It can be seen from many experiments and studies that barbituric acid is only partially separated in aqueous solution, and the concentration of hydrogen ions produced is relatively low, which is difficult to contradict the concentration of hydrogen ions dissociated by strong acids in water.

To sum up, barbituric acid is not a strong acid, but a weak acid. Its dissociation characteristics in water are determined by its molecular structure. This is a chemical principle and cannot be ignored.