Question

Класифікуйте речовини на, 4 класи за їх формулами: Ca(OH), Fe,O., HCl, KCl, Na,SO, H2S, FeCl,, Mg(OH), КОН, CaO, HNO, CO,, LiOH, H.SO, MgO, KNO,. Назвіть їх.

Answer 1

оксиды

Fe₂O₃ - оксид железа (III)

CaO - оксид кальция

CO₂ -  оксид углерода(IV) или углекислый газ

MgO - оксид магния

соли

KCl - хлорид калия

Na₂SO₄ - сульфат натрия

FeCl₃ - хлорид железа (III)

KNO₃ - нитрат калия

основание

Ca(OH)₂ - гидроксид кальция

Mg(OH)₂- гидроксид магния

КОН - гидроксид калия

LiOH- гидроксид лития

кислоты

HCl - соляная кислота

HNO₃ - азотная кислота

H₂SO₄ -серная кислота

H₂S - сероводородная кислота

Answer 2

Classification of Substances by Formulas:

In order to classify the substances based on their formulas, we need to analyze each formula and identify the elements present. Here is the classification of the given substances:

1. Ca(OH)2 - This formula represents calcium hydroxide. It consists of the elements calcium (Ca) and hydroxide (OH). Calcium hydroxide is commonly known as slaked lime.

2. Fe2O3 - This formula represents iron(III) oxide. It consists of the elements iron (Fe) and oxygen (O). Iron(III) oxide is commonly known as rust.

3. HCl - This formula represents hydrochloric acid. It consists of the elements hydrogen (H) and chlorine (Cl). Hydrochloric acid is a strong acid commonly used in laboratories and industrial processes.

4. KCl - This formula represents potassium chloride. It consists of the elements potassium (K) and chlorine (Cl). Potassium chloride is a salt commonly used as a fertilizer and in medical applications.

5. Na2SO4 - This formula represents sodium sulfate. It consists of the elements sodium (Na), sulfur (S), and oxygen (O). Sodium sulfate is a white crystalline solid commonly used in detergents and as a drying agent.

6. H2S - This formula represents hydrogen sulfide. It consists of the elements hydrogen (H) and sulfur (S). Hydrogen sulfide is a colorless gas with a characteristic odor, often associated with rotten eggs.

7. FeCl3 - This formula represents iron(III) chloride. It consists of the elements iron (Fe) and chlorine (Cl). Iron(III) chloride is a yellow-brown solid commonly used as a catalyst and in water treatment.

8. Mg(OH)2 - This formula represents magnesium hydroxide. It consists of the elements magnesium (Mg) and hydroxide (OH). Magnesium hydroxide is commonly used as an antacid and laxative.

9. KOH - This formula represents potassium hydroxide. It consists of the elements potassium (K) and hydroxide (OH). Potassium hydroxide is a strong base commonly used in the production of soaps and detergents.

10. CaO - This formula represents calcium oxide. It consists of the elements calcium (Ca) and oxygen (O). Calcium oxide is commonly known as quicklime and is used in construction and as a desiccant.

11. HNO3 - This formula represents nitric acid. It consists of the elements hydrogen (H), nitrogen (N), and oxygen (O). Nitric acid is a strong acid commonly used in the production of fertilizers and explosives.

12. CO2 - This formula represents carbon dioxide. It consists of the elements carbon (C) and oxygen (O). Carbon dioxide is a colorless gas that is a byproduct of combustion and is also a greenhouse gas.

13. LiOH - This formula represents lithium hydroxide. It consists of the elements lithium (Li) and hydroxide (OH). Lithium hydroxide is commonly used in the production of lithium-based batteries and as a carbon dioxide absorber in spacecraft.

14. H2SO4 - This formula represents sulfuric acid. It consists of the elements hydrogen (H), sulfur (S), and oxygen (O). Sulfuric acid is a strong acid commonly used in various industrial processes, including the production of fertilizers and dyes.

15. MgO - This formula represents magnesium oxide. It consists of the elements magnesium (Mg) and oxygen (O). Magnesium oxide is commonly used in the production of refractory materials and as an antacid.

16. KNO3 - This formula represents potassium nitrate. It consists of the elements potassium (K), nitrogen (N), and oxygen (O). Potassium nitrate is a salt commonly used in fertilizers and fireworks.

Please note that the names provided are common names for the substances based on their formulas.