lead dioxide


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lead dioxide

[′led dī′äk‚sīd]
(inorganic chemistry)
PbO2 Poisonous brown crystals that decompose when heated; insoluble in water and alcohol, soluble in glacial acetic acid; used as an oxidizing agent, in electrodes, batteries, matches, and explosives, as a textile mordant, in dye manufacture, and as an analytical reagent. Also known as anhydrous plumbic acid; brown lead oxide; lead peroxide.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
At the positive plate, sulfate ions and hydrogen ions in the electrolyte, and the free electrons in solution, react with lead dioxide molecules, forming lead sulfate and releasing two water molecules into the electrolyte solution.
The result of these two reactions is an electron deficit (a positive charge) at the lead dioxide plate and an electron excess (a negative charge) at the lead plate.
Urynowicz, "Lead dioxide as an alternative catalyst to platinum in microbial fuel cells," Electrochemistry Communications, vol.
Keywords: Lead dioxide anode, Electrodeposition, Chromium(III).
[12] Carr, J.P., and Hampson, N.A., 1972, "The Lead Dioxide Electrode," Chemical Reviews, 72, pp.
Keywords: Mixed lead dioxide, electro-catalytic activity, co-ions and n-butanol oxidation.
Platinum -- lower than lead dioxide but higher than Ru and Ir oxides
The investigations suggest that the stability and activity of the lead dioxide anode is influenced by the presence of Ce+3 / Ce+4 ions in the lead dioxide electrodeposits.