What is lead IV oxide?

Lead (IV) oxide is the compound through an oxidation state that +4, which appears as dark-brown solid which is insoluble in water. PbO2 exists in 2 crystalline forms. The has wide applications in electrochemistry, particularly as the positive plate that lead mountain batteries.

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Chemical Formula: PbO2 or O2Pb

IUPAC Name: command (IV) oxide

lead IV Oxide Formula Weight: 239.19gms


Lead Dioxide

Lead (IV) oxide

Lead peroxide

lead (IV) oxide

Plumbic oxide


Structure: lead IV Oxide has A crystal Hexagonal Structure

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Lead dioxide exist in two significant polymorphs, they room alpha and also beta, which happen naturally as rare mineral scrutinyite and also plattnerite.

Molecular structure of PbO2

Crystal structure of α-PbO2

Crystal framework of β-PbO2

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Properties of lead IV oxide

Physical Properties:

The Molar massive of command oxide is 239.1988 g/mol

It shows up with dark-brown shade or in black color powder

Lead oxide has actually a thickness of 9.38 g/cm3

Its Melting point is 290 °C (554 °F; 563 K)

Solubility: the is insoluble in water and also alcohol and also soluble in acetic acid

Chemical Properties:

Let,s examine some the the command iv oxide chemistry reactions


When command dioxide is cook in air, it decomposes together follows:

24PbO2→ 2Pb12O19+ 5O2

Pb12O19→ Pb12O17+ O2

2Pb12O17→ 8Pb3O4+ O2

2Pb3O4→ 6PbO+ O2

Reaction v Acids and Bases:

Lead dioxide (PbO2) is one amphoteric compound with prevalent acidic properties. Hydroxy plumbate ion, 2− is formed when command oxide is liquified in strong base.

PbO2+ NaOH + 2 H2O → Na2

lead dioxide reaction with warm acids, due to the fact that Pb4+ cation is very instable, the converts in to steady Pb2+ state and oxygen is liberated.

2PbO2 + 2H2SO4 → 2PbSO4 + 2H2O + O2

2PbO2 + 4HNO3 → 2Pb(NO3)2 + 2H2O + O2

PbO2 + 4HCl → PbCl2 + 2H2O + Cl2

Oxidising Agent:

Lead dioxide is acquainted for its strong oxidizing properties,

MnSO4 + 5 PbO2 + 6 HNO3 → 2 HMnO4 + PbSO4 + Pb (NO3)2 + 2 H2O

Cr (OH)3 + 10 KOH + 3 PbO2 → K2CrO4 + K2PbO2 + 8 H2O

Production of command IV oxide:

The reaction the Pb3O4 v nitric acid produces the dioxide.

Pb3O4+ HNO3→ PbO2+ Pb (NO3)2+ H2O

Plumbic oxide is treated, as soon as lead chloride is treated v sodium hypochlorite (NaClO).

Lead IV Oxide PbO2 Uses:

Lead dioxide is offered in the manufacture of matches, pyrotechnics, the curing the sulfide polymers and dyes.

It is likewise used in the advance of high-voltage lightning arresters

lead dioxide anodes were supplied for the manufacturing of glyoxylic acid from oxalic acid in a sulfuric mountain electrolyte.

It is used as the cathode that lead mountain batteries.

Key Points:

Lead (IV) oxide is an inorganic compound i beg your pardon is amphoteric in nature and has one oxidation state of +4. Command dioxide exists in two major polymorphs, they are alpha and also beta, which take place naturally as rare minerals scrutinyite and also plattnerite.

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It is insoluble in water and alcohol and also soluble in acetic acid. The decomposes when it is cook in air. The possesses solid oxidizing properties. That is provided in miscellaneous ways, the most important use is, it is supplied as a cathode in lead mountain batteries.