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Why does phosphoric acid lack oxidizing properties? 


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Phosphoric acid's lack of oxidizing properties can be attributed to its role in various processes. In the context of fuel cells, the presence of phosphoric acid as an electrolyte hinders oxygen reduction kinetics, limiting the efficiency of fuel cells due to blockage of electroactive sites by adsorbed molecules . Additionally, in the purification of phosphoric acid, chemical oxidation with hydrogen peroxide and adsorption onto activated carbon are explored, indicating the presence of organic compounds that resist oxidation by hydrogen peroxide . Furthermore, phospholipids containing polyunsaturated fatty acids coupled with saturated or monounsaturated fatty acids do not exhibit increased rates of peroxidation, suggesting a protective mechanism against oxidation . These insights collectively highlight how phosphoric acid's properties interact with various compounds and processes, contributing to its limited oxidizing properties.

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Phosphoric acid lacks oxidizing properties due to its role as a counter ion in adjusting pH during polyaniline oxidation and reduction, extending electrochemical activity to pH 7.0.
Phosphoric acid lacks oxidizing properties due to hindered oxygen reduction kinetics, leading to inefficiency in fuel cells. Higher concentrations hinder oxygen adsorption, affecting electroactive sites and increasing Tafel slope.
Phosphoric acid lacks oxidizing properties due to the presence of an important amount of organics that cannot be oxidized by hydrogen peroxide under the studied conditions.
Phosphoric acid does not increase asphalt oxidation rates because it lacks oxidizing properties, as confirmed by the research findings presented in the study.
Not addressed in the paper.

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