Chemical reactions of the elements Reaction of zinc with airZinc metal tarnishes in moist air. Zinc metal burns in air to form the white zinc(II) oxide, a material that tirns yellow on prolonged heating. 2Zn(s) + O2(g) → 2ZnO(s) [white] Reaction of zinc with waterZinc does not react with water. Reaction of zinc with the halogensZinc dibromide, zinc(II) dibromide, ZnBr2, and zinc diiodide, zinc(II) dibiodide, NiI2, are formed in the reactions of zinc metal and bromine, Br2, or iodine, I2. Zn(s) + Br2(g) → ZnBr2(s) [white] Zn(s) + I2(g) → ZnI2(s) [white] Reaction of zinc with acidsZinc metal dissolves slowly in dilute sulphuric acid to form solutions containing the aquated Zn(II) ion together with hydrogen gas, H2. In practice, the Zn(II) is present as the complex ion [Zn(OH2)6]2+. Zn(s) + H2SO4(aq) → Zn2+(aq) + SO42-(aq) + H2(g) The reacts of zinc with oxidizing acids such as nitric acid, HNO3, are complex and depend upon precise conditions. Reaction of zinc with basesZinc metal dissolves in aqueous alkalis such as potassium hydroxide, KOH, to form zincates such as [Zn(OH)4]2-. The resulting solutions contain other species as well. WebElements ShopWebElements now has an online shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.
|
|||||||||
 
|
|
Zinc
Zinc
Zink
Zink
Zinco
Cinc
Zink
Zinco