Lead(II) chromate
Lead(II) chromate is an inorganic compound with formula PbCrO4.
- 1Names
- 2Formulae and structures
- 3Properties
- 4Constituents
- 5Thermodynamic properties
- 6Solubility
- 7Hazards
- 8Preparations
- 9Chemical reactions
- 10References
- 11Related substances
- 12Related categories
Names
List of substance names
- Typical name
- Lead(II) chromate
- Compositional nomenclature
- Lead(II) chromate
- Additive nomenclature
- Lead(2+) tetraoxidochromate(2−)
Formulae and structures
List of formulae
- Typical formula
- PbCrO4
- Compositional formula
- PbCrO4
- Structural formula
- Other structural formulas
- Lewis structure
- Colored Lewis structure
Properties
List of substance properties
Constituents
Constituent ions
| Ion | Name | Charge number | Number |
|---|---|---|---|
| Pb2+ | Lead(II) ion | 2 | 1 |
| CrO42− | Chromate ion | -2 | 1 |
Constituent atoms
| Atom | Name | Oxidation state | Number |
|---|---|---|---|
| Pb | Lead | +2 | 1 |
| Cr | Chromium | +6 | 1 |
| O | Oxygen | −2 | 4 |
Ratio of atoms
| Atom | Atomic weight | Number | Atomic ratio | Weight ratio |
|---|---|---|---|---|
| Pb | 207.2 | 1 | 16.67% | 64.11% |
| Cr | 51.9961 | 1 | 16.67% | 16.09% |
| O | 15.999 | 4 | 66.67% | 19.80% |
Thermodynamic properties
Phase transition properties
- Enthalpy of fusion
- –
- Enthalpy of vaporization
- –
- Enthalpy of vaporization at 25°C
- –
- Enthalpy of other transition
- –
Standard thermodynamic properties
State | Standard enthalpy of formation ΔfH° kJ · mol−1 | Standard Gibbs energy of formation ΔfG° kJ · mol−1 | Standard molar entropy S° J · K−1 · mol−1 | Standard molar heat capacity at constant pressure Cp° J · K−1 · mol−1 |
|---|---|---|---|---|
| Crystalline solid | −930.9[3] | – | – | – |
Solubility
Qualitative solubility
Solubility in water (g/100 mL)[4]
| 18°C |
|---|
| 0.00001 |
Solubility curve (g/100 mL)
Hazards
GHS label[5]
- Hazard pictograms
- Signal word
- Danger
- Hazard statements
- H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H317: May cause an allergic skin reaction
- H350: May cause cancer
- H360: May damage fertility or the unborn child
- H370: Causes damage to organs
- H370: Causes damage to central nervous system
- H370: Causes damage to blood system
- H370: Causes damage to kidney
- H372: Causes damage to organs through prolonged or repeated exposure
- H372: Causes damage to central nervous system through prolonged or repeated exposure
- H372: Causes damage to blood system through prolonged or repeated exposure
- H372: Causes damage to kidney through prolonged or repeated exposure
Physical hazards[5]
Health hazards[5]
Environmental hazards[5]
| Classification | Category | Label | Hazard statement |
|---|---|---|---|
| Hazardous to the aquatic environment short term | Classification not possible | ||
| Hazardous to the aquatic environment long term | Classification not possible | ||
| Hazardous to the ozone layer | No data |
Preparations
Reaction of acid and base
The reaction of acid and base can yield lead(II) chromate.
Reaction of base and acidic oxide
The reaction of lead(II) hydroxide and chromium(VI) oxide yields lead(II) chromate and water.
Reaction of basic oxide and acid
The reaction of basic oxide and acid can yield lead(II) chromate.
Reaction of basic oxide and acidic oxide
The reaction of lead(II) oxide and chromium(VI) oxide yields lead(II) chromate.
Precipitation reaction
When lead(II) ion and chromate ion react in aqueous solution, a precipitate of lead(II) chromate is formed.
Reaction of active metal and acid
The reaction of and chromic acid yields lead(II) chromate and .
Reaction of active metal, acidic oxide, and water
The reaction of , chromium(VI) oxide, and water yields lead(II) chromate and .
Chemical reactions
Electrolytic dissociation
Electrolytic dissociation of lead(II) chromate yields lead(II) ion and chromate ion.
Reaction with strong acid
The reaction of lead(II) chromate and strong acid yields salt of strong acid and chromic acid.
Reaction with strong base
The reaction of lead(II) chromate and strong base yields salt of strong base and lead(II) hydroxide.
Reaction with reducing species
The reaction of reducing species and lead(II) chromate yields a variety of products.
Reaction with oxidizable species
The reaction of oxidizable species and lead(II) chromate yields a variety of products.
Reaction with oxidizable species under acidic condition
The reaction of oxidizable species, lead(II) chromate, and hydrogen ion yields a variety of products.
Reaction with oxidizable species under neutral condition
The reaction of oxidizable species, lead(II) chromate, and water yields a variety of products.
Reaction with oxidizing species
The reaction of lead(II) chromate and oxidizing species yields a variety of products.
Reaction with hardly oxidizable species
The reaction of hardly oxidizable species and lead(II) chromate yields a variety of products.
Reaction with hardly oxidizable species under acidic condition
The reaction of hardly oxidizable species, lead(II) chromate, and hydrogen ion yields a variety of products.
Reaction with oxidizing species under neutral condition
The reaction of lead(II) chromate, oxidizing species, and water yields a variety of products.
Reaction with hardly oxidizable species under neutral condition
The reaction of hardly oxidizable species, lead(II) chromate, and water yields a variety of products.
Decomposition
Decomposition of lead(II) chromate yields lead(II) oxide and chromium(VI) oxide.
Hydrolysis
The reaction of lead(II) chromate and water yields lead(II) hydroxide and acid/acid salt/hydride.
Molten salt electrolysis
Molten salt electrolysis of lead(II) chromate yields a variety of products.
References
List of references
- 1James G. Speight (2017)Lange's Handbook of Chemistry, 17th editionMcGraw Hill Education
- 2John R. Rumble Jr, David R. Lide, Thomas J. Bruno (2019)CRC Handbook of Chemistry and Physics 100th EditionCRC Press
- ^ Density, 6.12 g/cm3 - p.4-46
- ^ Melting point, 844 °C - p.4-46
- 3Janiel J. Reed (1989)The NBS Tables of Chemical Thermodynamic Properties: Selected Values for Inorganic and C1 and C2 Organic Substances in SI UnitsNational Institute of Standards and Technology (NIST)
- 4Atherton Seidell (1919)Solubilities of Inorganic and Organic Compounds: A Compilation of Quantitative Solubility Data From the Periodical LiteratureD. Van Nostrand Company
- 5Chemical Management CenterGHS Classification ResultsNational Institute of Technology and Evaluation
