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PbO is reduced to elemental lead when heated under carbon monoxide at around 1,200 °C (2,200 °F): PbO + CO → Pb + CO 2. The red and yellow forms of this material are related by a small change in enthalpy: PbO (red) → PbO (yellow) ΔH = 1.6 kJ/mol. PbO is amphoteric, which means that it
Lead dioxide is an amphoteric compound with prevalent acidic properties. It dissolves in strong bases to form the hydroxyplumbate ion ... PbO 2 is not combustible ...
Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Aluminium oxide (Al 2 O 3) is an example of an amphoteric oxide. Amphoterism depends on the oxidation states of the oxide. Amphoteric oxides include lead(II) oxide and zinc oxide, among many others. [5]
Lead sesquioxide, Pb 2 O 3, which is a lead (II,IV) oxide as well (lead(II) metaplumbate(IV) [Pb 2+][PbO 2− 3]), reddish yellow Pb 12 O 19 , monoclinic, dark-brown or black crystals The so-called black lead oxide , which is a mixture of PbO and fine-powdered Pb metal and used in the production of lead–acid batteries .
2 PbO + PbS → 3 Pb + SO 2. Metallic lead is attacked (oxidized) only superficially by air, forming a thin layer of lead oxide that protects it from further oxidation. The metal is not attacked by sulfuric or hydrochloric acids. It dissolves in nitric acid with the evolution of nitric oxide gas to form dissolved Pb(NO 3) 2. 3 Pb + 8 H + + 8 NO −
4 Pb + SO 2 → R 3 PbO(SO)R R 3 PbCl + 1/2Ag 2 O (aq) → R 3 PbOH + AgCl R 2 PbCl 2 + 2 OH − → R 2 Pb(OH) 2 + 2 Cl −. R 2 Pb(OH) 2 compounds are amphoteric. At pH lower than 8 they form R 2 Pb 2+ ions and with pH higher than 10, R 2 Pb(OH) 3 − ions. Derived from the hydroxides are the plumboxanes: 2 R 3 PbOH + Na → (R 3 Pb) 2 O ...
Image credits: Michael Buckner / Getty #3 Scott Disick. Boxes of Mounjaro, which is known for its weight loss effects, were found stacked in Scott Disick’s fridge on a past episode of The ...
The −1 state should not be important for tennessine and its major oxidation states should be +1 and +3, with +3 more stable: Ts 3+ is expected to behave similarly to Au 3+ in halide media. As such, tennessine oxide (Ts 2 O 3) is expected to be amphoteric, similar to gold oxide and astatine(III) oxide.