What is lead IV oxide?

Lead (IV) oxide is the compound v an oxidation state of +4, which appears as dark-brown solid which is insoluble in water. PbO2 exists in 2 crystalline forms. That has large applications in electrochemistry, particularly as the hopeful plate of lead mountain batteries.

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Chemical Formula: PbO2 or O2Pb

IUPAC Name: lead (IV) oxide

lead IV Oxide Formula Weight: 239.19gms

Synonyms:

Lead Dioxide

Lead (IV) oxide

Lead peroxide

lead (IV) oxide

Plumbic oxide

Plattnerite

Structure: command IV Oxide has actually A decision Hexagonal Structure

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

Molecular structure of PbO2


Crystal framework 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 color or in black powder

Lead oxide has actually a density of 9.38 g/cm3

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

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

Chemical Properties:

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

Decomposition:

When lead dioxide is boil in air, that decomposes together follows:

24PbO2→ 2Pb12O19+ 5O2

Pb12O19→ Pb12O17+ O2

2Pb12O17→ 8Pb3O4+ O2

2Pb3O4→ 6PbO+ O2

Reaction through Acids and Bases:

Lead dioxide (PbO2) is an amphoteric compound with prevalent acidic properties. Hydroxy plumbate ion, 2− is created when lead oxide is liquified in solid base.

PbO2+ NaOH + 2 H2O → Na2

lead dioxide reaction with warm acids, because Pb4+ cation is very instable, it converts in to secure Pb2+ state and also 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 solid 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 lead IV oxide:

The reaction of Pb3O4 through nitric acid produces the dioxide.

Pb3O4+ HNO3→ PbO2+ Pb (NO3)2+ H2O

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

Lead IV Oxide PbO2 Uses:

Lead dioxide is used in the to produce of matches, pyrotechnics, the curing that sulfide polymers and also dyes.

It is also used in the breakthrough of high-voltage lightning arresters

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

It is supplied as the cathode of lead acid batteries.

Key Points:

Lead (IV) oxide is an not natural compound i beg your pardon is amphoteric in nature and also has an oxidation state that +4. Command dioxide exist in two major polymorphs, they room alpha and also beta, which occur naturally as rare minerals scrutinyite and plattnerite.

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