Reaction with water
Zinc virtually has no reaction with cold water.
Zinc reacts with steam to give zinc oxide and hydrogen gas.
The reaction occurs in a similar way as magnesium does, but less vigorous.
zinc + steam —> zinc oxide + hydrogen
Zn(s) + H2O(g) —> ZnO(s) + H2(g)
Reaction with oxygen
Strong heating is required to make zinc powder burn in oxygen. Much heat is given out during the reaction and a white powder
is formed, which is yellow when hot and white when cold.
zinc + oxygen —> zinc oxide
2Zn(s) + O2(g) —> 2ZnO(s)
Reaction with dilute acids
Zinc reacts with dilute hydrochloric acid to give zinc chloride and hydrogen gas.
zinc + hydrochloric acid —> zinc chloride + hydrogen
Zn(s) + 2HCl(aq) —> ZnCl2(aq) + H2(g)
Zinc reacts with dilute sulphuric acid to give zinc sulphate and hydrogen gas.
zinc + sulphuric acid —> zinc sulphate + hydrogen
Zn(s) + H2SO4 (aq) —> ZnSO4(aq) + H2(g)
Zinc reacts with dilute nitric acid to give zinc nitrate and hydrogen gas.
Zinc + nitric acid —> Zinc nitrate + hydrogen
Zn(s) + 2HNO3(aq) —> Zn(NO3)2(aq) + H2(g)