Chemistry Letters, Vol.40, No.10, 1187-1188, 2011
Diffusion Coefficients of Arsenate and Arsenite in Water at Various pH
Diffusion coefficients (D) of arsenite and arsenate at various pH, or degrees of dissociation, were reported by diffusion cell, some values of which are newly reported in this letter. Systematic decrease of D depending on the dissociation of arsenite and arsenate shows that D is closely related to the size of the hydrated ions.