Equation of reactions of interaction of aluminum with the following substances diluted hydrochloric

Equation of reactions of interaction of aluminum with the following substances diluted hydrochloric acid, mercury chloride solution HgCl2, iron oxide 3.

Let’s compose the reaction equations:
1.2AL + 6HCl = 2AlCl3 + 3H2 – redox reaction;
2. 2Al + 3HgCl2 = 2AlCl3 + 3Hg – substitution reaction;
3. 2Al + Fe2O3 = 2Fe + Al2O3 – aluminothermy allows you to get iron.
All reactions are of practical importance. Aluminum exhibits reducing agent properties when interacting with acids. Metal – aluminum displaces mercury from the salt solution, since aluminum in the series of voltages stands up to hydrogen.
The production of metals by the method of aluminothermy is used in metallurgy.