Make a chain of equations: H2 – HCl-NaCl-Cl2-CaCl2

1) H2+Cl2=2HCl
2)HCl+NaOH=NaCl+H2O
3)2NaCl=2Na+Cl2
4)Ca+Cl2+CaCl2



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.