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Reaction between arsenic III and chromium VI

The reaction between arsenic(III) and chromium(VI) in 0.01-0.05 M sulphuric acid was studied by DeLury . On recomputing his data taking into consideration the dichromate-hydrogen chromate equilibrium [Pg.521]

Edwards has pointed out that, at low acid chromate concentrations, the plot of A /[HCr04][H ] against 1/[H ] is linear but not horizontal. Therefore the rate law [Pg.521]

Mason and Kowalak have found that, in 0.2 M acetate buffer at low concentrations of chromate and high concentrations of arsenous acid, the rate law has the form [Pg.521]

Considering also the stoichiometry of the reaction, we find that [Pg.521]

In the case of high concentrations of chromate and low concentrations of arsenous acid, we must take into account that dichromate ions are also involved in reaction. Thus [Pg.521]


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