pH-Spectrum of
Citric acid monohydrate

Experimental:

System C05/1/2 - (0.5/1.0/2.0 mmol/L Citric acid / dist. water)

Results:

System C05/1/2: At the point of intersection of tangents at pH 4.0/3.8/3.5 and 12, 73%/56%/38% and 78% of the COOH-groups from Citric acid have been deprotonated.