EINECS 233-256-9. Your email address will not be published. The net ionic reaction is Pb2+(aq) + 2 I-(aq) --> PbI2(s), The Kspof PbI2 is 9.8 X10-9. 2. The reaction is as follows: The sulfur (S) obtained is washed with dimethyl sulfoxide (C2H6OS). At room temperature, it is a bright yellow odorless crystalline solid, that becomes orange and red when heated. Insoluble in alcohol and cold HCl. Missed the LibreFest? Store in its original form or under several layers of varnish at average humidity and room temperature. CopyCopied, CSID:23305, http://www.chemspider.com/Chemical-Structure.23305.html (accessed 00:52, Nov 27, 2020) elems[i].textContent = items[i].parent.getAttribute('value'); The compound currently has a few specialized applications, such as the manufacture solar cells and X-ray and gamma-ray detectors. Specific Gravity: 6.16. ').replace(/[^\d\.\/]/g,'')); Both lead nitrate and potassium iodide are very poisonous. Contact: Randy Sullivan, smrandy@uoregon.edu. What is the significance of this demonstration? By continuing to view the descriptions of the demonstrations you have agreed to the following disclaimer. Insoluble in alcohol and cold HCl, Inorganic Compound; Lead Compound; Pollutant; Industrial/Workplace Toxin; Synthetic Compound. The solubility rules tell us that salts of group 1 (IA) metals are soluble, salts containing the nitrate anion are soluble, and salts containing the iodide anion are insoluble except for those containing the lead(II) cation (among others). Freely soluble in sodium thiosulfate solution. var codes=document.getElementsByClassName("contenteditable "+group); Add the potassium iodide to the lead(II… Lead(II) iodide (PbI2) • Ingesting large amounts of this compound results in irritation of the alimentary tract. Watch the recordings here on Youtube! the ions are mobile, until they find each other and form a solid. When a few crystals of lead nitrate and potassium iodide are added to opposite sides of a Petri dish containing deionized water, after a few minutes, a line of bright yellow lead(II) iodide precipitate forms down the middle of the dish. 50 g $ 50.00. width: calc(100% - 10px); group=obj.classList[i]; 77613. and The only way the solid lead(II) iodide precipitate can form in the middle of the petri dish is for 1) the Pb(NO3)2 and the KI to dissociate into ions in the water and 2) the Pb2+ ions and I- ions must migrate in the aqueous solution, i.e. Have questions or comments? '); var val = parseFloat(obj.textContent.replace(/,/g,".").replace(/[кКkK]/g,'000').replace(/[^\d\. ').replace(/[^\d\.\/]/g,''); However, that use has been largely discontinued due to its toxicity and poor stability. box-shadow: 0px 0px 2px #ccc; Soluble in concentrated solutions of alkali iodides. There are few appropriate methods of growing: Gold rain experimentLead(II) iodide, Vladimir Viter, Chemistry chemists periodicalVladimir ViterChemistry chemists periodical, Growth in the gelLead(II) iodide, Sergey Sachkov, VKontakteSergey SachkovVKontakte, Under the microscopeLead(II) iodide, Microlab photo galleryMicrolab photo gallery, Cooling of hot saturated solutionLead(II) iodide, Stanislav Popov, VKontakteStanislav PopovVKontakte, Germanium iodide (GeI4) • Place silicic acid gel in the tube. } It is widely used in printing, photography, and to seed clouds. HSDB 636. var spans = codes[i].getElementsByClassName("smwtext"); Lead(II) iodide or lead iodide is a salt with the formula PbI2. width: 0; Its prepraration is a popular demonstration in basic chemistry education, to teach topics such as double displacement reactions and stoichometry. FT-0627762. This material contains Lead (II) Iodide (listed as Lead, inorganic compounds), 99%, (CAS# 10101-63-0) which is subject to the reporting requirements of Section 313 of SARA Title III and 40 CFR Part 373. For more information contact us at info@libretexts.org or check out our status page at https://status.libretexts.org. Your email address will not be published. At room temperature, it is a bright yellow odorless crystalline solid, that becomes orange and red when heated. Dissolve both lead(II) nitrate and potassium iodide in distilled water - 250mL for each solution. if (obj.classList[i].indexOf('group-') !== -1) { Search term: "lead (II) iodide" Compare Products: Select up to 4 products. cursor: pointer; { It is a threat to the environment and immediate steps need to be taken to stop the spread. It was formerly called plumbous iodide. Another method to obtain lead iodide in the form of a thin film is by depositing a film of PbS and exposing it to iodine vapor. The solid potassium iodide ane solid lead nitrate dissolve and their constituent ions begin to diffuse through the water. Connection should be hermetic. window.clc_enter = function(obj,event) For preparation of 100.00g of lead(II) iodide а 71.85g of lead(II) nitrate or 82.28g of lead(II) acetate trihydrate. ACMC-1C53O. *Please select more than one item to compare. CTK0F6521. Used as photon detector for X-rays and gamma-rays. This material does not contain any Class 1 Ozone depletors. What is Lead iodide? .categories{ Randy Sullivan, University of Oregon { At room temperature, it is a bright yellow odorless crystalline solid, that becomes orange and red when heated. }; When combined with computer animations of the dissolving process and the migration of ions to form lead(II) iodide (macroscopic level) this demonstration is an effective teaching tool. It is a good oxidizing agent, burns with a green coloured flame. C.I. It is also called Plumbous iodide or Lead (II) iodide or Lead diiodide. } EC Number 233-256-9. Freely soluble in sodium thiosulfate solution. Take two plastic or glass containers connected with a tube at center or bottom. val = (items[i]).getAttribute('value').toString().replace(/,/g,'. Product Code: PBL6190. © Copyright 2012 Email: for(var i=0; i<(elems.length); i++) { This demonstration, with the pedagogy of having students "do the work" of predicting products, writing equations, and drawing particle level diagrams works best if it is presented AFTER the precipitation of silver chromate demonstration - which is done in a teacher directed manner. In lead (II) iodide, the charges balance in a 1 : 2 ratio, so the formula is "PbI"_2. return true; The only way the solid lead(II) iodide precipitate can form in the middle of the petri dish is for 1) the Pb(NO 3) 2 and the KI to dissociate into ions in the water and 2) the Pb 2 + ions and I-ions must migrate in the aqueous solution, i.e. Structure, properties, spectra, suppliers and links for: Lead(II) iodide, 10101-63-0. This demonstration provides evidence to support this claim. Lead(II) Iodide (99.99%, trace metals basis) [for Perovskite precursor] Blei(II)-iodid. Lead(II) citrate (Pb3(C6H5O7)2) • Do not store in matchboxes or cotton wool and do not heat. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. The compound currently has a few specialized applications, such as the manufacture solar cells and X-ray and gamma-ray detectors. height: 0; Lead(II) chloride (PbCl2) • margin-top: -3px; Lead(II) iodide or lead iodide is a salt with the formula PbI2. It is decomposed by light at moderately high temperatures and this effect has been used in a patented photographicprocess. Handle them with care. } } { background:#ddd; Lead(II) iodide or lead iodide is a salt with the formula PbI2. This demonstration works best if the instructor uses this demonstration as the basis of a presentation and takes about 12-15 minutes to have students do the activities that accompany this demonstration. In concentrated solutions of alkali iodides. It is insoluble in water and denser when compared to water. UO Libraries Interactive Media Group. InChI=1S/2HI.Pb/h2*1H;/q;;+2/p-2 content: ""; 1. https://en.crystalls.info/w/index.php?title=Lead(II)_iodide&oldid=13066, Cooling the hot solution of the final compound, Direct reaction with simultaneous cooling (general method, the basis of experiment called "Golden rain"), Carrying out the reaction in the gel of silicic acid. A student activity sheet to accompany this demonstration is available. The solution in the Petri dish is very "sloshy." border-style: solid; Its prepraration is a popular demonstration in basic chemistry education, to teach topics such as double displacement reactions and stoichometry. Lead iodide was formerly employed as a yellow pigment in some paints, with the name iodide yellow. # display:none; elems.push(spans[j]); It's probably best to drain it into a waste container of some kind before removing the demo. Metal-Organics. top: 1.5em; the ions disperse in solution. Do not proceed to schedule a custom demo unless you have already conferred with the lecture demonstrator about it. Lead … Place a Petri dish under an document projector camera (preferably on a dark background) or on an overhead projector.