Chemical reactions of the elementsReaction of lead with airThe surface of metallic lead is protected by a thin layer of lead oxide, PbO. Only upon heating lead to 600-800°C does lead react with oxygen in air to from lead oxide, PbO. 2Pb(s) + O2(g) → 2PbO(s) Finely divided lead powder is pyrophoric, however, meaning it is a fire risk. Reaction of lead with waterThe surface of metallic lead is protected by a thin layer of lead oxide, PbO. It does not react with water under normal conditions. Reaction of lead with the halogensLead metal reacts vigorously with fluorine, F2, at room temperature and chlorine, Cl2, on warming to form the poisonous dihalides lead(II) fluoride, PbF2, and lead(II) chloride, PbCl2, respectively. Pb(s) + F2(g) → PbF2(s) [] Pb(s) + Cl2(g) → PbCl2(s) [] Reaction of lead with acidsThe surface of metallic lead is protected by a thin layer of lead oxide, PbO. This renders the lead essentially insoluble in sulphuric acid, and so, in the past, a useful container of this acid. Lead reacts slowly with hydrochloric acid and nitric acid, HNO3. In the latter case, nitrogen oxides are formed together with lead(II) nitrate, Pb(NO3)2. Reaction of lead with basesLead dissolves slowly in cold alkalis to form plumbites. WebElements ShopWebElements now has a WebElements shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.
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