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Hub AI
Lead(II) iodide AI simulator
(@Lead(II) iodide_simulator)
Hub AI
Lead(II) iodide AI simulator
(@Lead(II) iodide_simulator)
Lead(II) iodide
Lead(II) iodide (or lead iodide) is a chemical compound with the formula PbI
2. At room temperature, it is a bright yellow odorless crystalline solid, that becomes orange and red when heated. It was formerly called plumbous iodide.
The compound currently has a few specialized applications, such as the manufacture of solar cells, X-rays and gamma-ray detectors. Its preparation is used in chemistry education to teach topics such as precipitation reactions and stoichiometry. It is decomposed by light at temperatures above 125 °C (257 °F), and this effect has been used in a patented photographic process.
Lead iodide was formerly employed as a yellow pigment in some paints, with the name iodide yellow. However, that use has been largely discontinued due to its toxicity and poor stability.
PbI
2 is commonly synthesized via a precipitation reaction between potassium iodide KI and lead(II) nitrate Pb(NO
3)2 in water solution:
While the potassium nitrate KNO
3 is soluble, the lead iodide PbI
2 is nearly insoluble at room temperature, and thus precipitates out.
Other soluble compounds containing lead(II) and iodide can be used instead, for example lead(II) acetate and sodium iodide.
The compound can also be synthesized by reacting iodine vapor with molten lead between 500 and 700 °C.
A thin film of PbI
2 can also be prepared by depositing a film of lead sulfide PbS and exposing it to iodine vapor, by the reaction
Lead(II) iodide
Lead(II) iodide (or lead iodide) is a chemical compound with the formula PbI
2. At room temperature, it is a bright yellow odorless crystalline solid, that becomes orange and red when heated. It was formerly called plumbous iodide.
The compound currently has a few specialized applications, such as the manufacture of solar cells, X-rays and gamma-ray detectors. Its preparation is used in chemistry education to teach topics such as precipitation reactions and stoichiometry. It is decomposed by light at temperatures above 125 °C (257 °F), and this effect has been used in a patented photographic process.
Lead iodide was formerly employed as a yellow pigment in some paints, with the name iodide yellow. However, that use has been largely discontinued due to its toxicity and poor stability.
PbI
2 is commonly synthesized via a precipitation reaction between potassium iodide KI and lead(II) nitrate Pb(NO
3)2 in water solution:
While the potassium nitrate KNO
3 is soluble, the lead iodide PbI
2 is nearly insoluble at room temperature, and thus precipitates out.
Other soluble compounds containing lead(II) and iodide can be used instead, for example lead(II) acetate and sodium iodide.
The compound can also be synthesized by reacting iodine vapor with molten lead between 500 and 700 °C.
A thin film of PbI
2 can also be prepared by depositing a film of lead sulfide PbS and exposing it to iodine vapor, by the reaction
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