Chemical reactions of the elements Reaction of cadmium with airCadmium metal burns in air to form cadmium(II) oxide. This material is coloured variously, depending upon how it was made. 2Cd(s) + O2(g) → 2CdO(s) Reaction of cadmium with waterCadmium metal does not react with water. Reaction of cadmium with the halogensCadmium difluoride, cadmium(II) difluoride, CdF2, cadmium dibromide, cadmium(II) dibromide, CdBr2, and cadmium diiodide, cadmium(II) diiodide, CdI2, are formed in the reactions of cadmium metal and fluorine, F2, bromine, Br2, or iodine, I2. Cd(s) + F2(g) → CdF2(s) [white] Cd(s) + Br2(g) → CdBr2(s) [pale yellow] Cd(s) + I2(g) → CdI2(s) [white] Reaction of cadmium with acidsCadmium metal dissolves slowly in dilute sulphuric acid to form solutions containing the aquated Cd(II) ion together with hydrogen gas, H2. In practice, the Cd(II) is present as the complex ion [Cd(OH2)6]2+. Cd(s) + H2SO4(aq) → Cd2+(aq) + SO42-(aq) + H2(g) The reacts of cadmium with oxidizing acids such as nitric acid, HNO3, are complex and depend upon precise conditions. Reaction of cadmium with basesCadmium metal does not dissolve in aqueous alkalis such as potassium hydroxide, KOH. WebElements ShopWebElements now has an online shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.
|
|||||||||
 
|
|
Cadmium
Cadmium
Cadmium
Cadmium
Cadmio
Cadmio
Kadmium
Cádmio