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Careful hydrolysis of lead(II) acetate solution yields a crystalline product with a formula 6PbO·2H 2 O or Pb 6 O 4 (OH) 4. [4] This material is a cluster compound, consisting of an octahedron of Pb centers, each face of which is capped by an oxide or a hydroxide. The structure is reminiscent of the Mo 6 S 8 subunit of the Chevrel phases. [5]
The compounds are almost insoluble in water, weak acids, and (NH 4) 2 S/(NH 4) 2 S 2 solution is the key for separation of lead from analytical groups I to III elements, tin, arsenic, and antimony. The compounds dissolve in nitric and hydrochloric acids, to give elemental sulfur and hydrogen sulfide, respectively. [ 7 ]
Lead hydroxide may refer to: Lead(II) hydroxide; Lead(IV) hydroxide; Triphenyl lead hydroxide This page was last edited on 28 August 2024, at 03:13 ...
Predicting the color of a compound can be extremely complicated. Some examples include: Cobalt chloride is pink or blue depending on the state of hydration (blue dry, pink with water) so it is used as a moisture indicator in silica gel. Zinc oxide is white, but at higher temperatures becomes yellow, returning to white as it cools.
Color pigments used on the warship Vasa, with white lead second from left, bottom shelf. White lead is the basic lead carbonate 2PbCO 3 ·Pb(OH) 2. [1] It is a complex salt, containing both carbonate and hydroxide ions. White lead occurs naturally as a mineral, in which context it is known as hydrocerussite, [1] a hydrate of cerussite. [2]
Lead(IV) hydroxide, Pb(OH) 4, also called ortho-plumbic acid, is the notional conjugate acid of the ortho-plumbate(IV) ion, PbO 4− 4, found in compounds such as calcium orthoplumbate, Ca 2 PbO 4. [ citation needed ] Like its tin analog Sn(OH) 4 , Pb(OH) 4 has not been isolated.
It is described as lead(II,IV) oxide, or structurally 2PbO·PbO 2, and is the best-known mixed valence lead compound. Lead dioxide is a strong oxidizing agent, capable of oxidizing hydrochloric acid to chlorine gas. [77] This is because the expected PbCl 4 that would be produced is unstable and spontaneously decomposes to PbCl 2 and Cl 2. [78]
A flame test involves introducing a sample of the element or compound to a hot, non-luminous flame and observing the color of the flame that results. [4] The compound can be made into a paste with concentrated hydrochloric acid, as metal halides, being volatile, give better results. [5] Different flames can be tried to verify the accuracy of ...