Write down the equations of the reactions of a) aluminum with oxygen, b) decomposition of water

Write down the equations of the reactions of a) aluminum with oxygen, b) decomposition of water, c) exchange between sodium base and hydrochloric acid, d) substitution of magnesium and copper sulfide

a) The reaction of interaction of aluminum with oxygen. As a result of the reaction, hexavalent alumina is formed. The chemical equation for the reaction is as follows:

4 Al + 3 O2 = 2 Al2O3

b) The reaction of decomposition of water into hydrogen and oxygen is as follows:

2 H2O = 2 H2 + O2

c) The exchange reaction between the base sodium hydroxide and hydrochloric acid. As a result of the reaction, sodium chloride is formed and water is released. The chemical equation for the reaction is as follows:

NaOH + HCl = NaCl + H2O

d) Reaction between magnesium and copper sulfide. The reaction produces pure copper and magnesium sulfide. The reaction proceeds as a substitution. The chemical equation for the reaction is as follows:

Mg + Cu2S = 2 Cu + MgS.