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Related to phosphorous acid: hypophosphorous acid, metaphosphoric acid
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2] 2 at 70 [degrees]C with different concentrations of phosphorous acid (0-20 g/L) while maintaining a high concentration of phosphoric acid in the bath (40 g/L).
3] indicating that phosphorous acid is indeed the only electrochemically active phosphorous species which acts as the phosphorous source in the present solution.
The concentrations of phosphorous acid and phosphoric acid in the solution were kept constant at 20 and 40 g/L, respectively.