Substances are given: calcium, hydrochloric acid, calcium oxide, copper, sodium hydroxide

univerkov | May 17, 2021 | education

Substances are given: calcium, hydrochloric acid, calcium oxide, copper, sodium hydroxide, water. which of them will react to each other. write down the reaction equations and name the substances obtained.

1. Ca + 2HCl = CaCl2 + H2. Calcium chloride.

2. Ca + 2NaOH = Ca (OH) 2 + 2Na. Calcium hydroxide.

3. Ca + 2H2O = Ca (OH) 2 + H2.

4. CaO + H2O = Ca (OH) 2.

5. CaO + 2HCl = CaCl2 + H2O.

6. Cu + H2O = CuO + H2. Copper oxide.

7. Cu + 2HCl = CuCl2 + H2. Copper chloride.

8. Cu + NaOH = Cu (OH) 2 + Na. Copper hydroxide.

9.H2O + NaOH = H2 + NaOH + O2. Sodium hydroxide.

10. HCl + NaOH = NaCl + H2O. Sodium chloride.

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.