Question

Скласти молекулярні й іонні рівняння реакцій між: а) нітратом срібла й хлоридом барію; б) сульфатною кислотою й сульфідом натрію.

Answer 1

Ответ:

BaCl₂ + 2AgNO₃ = Ba(NO₃)₂ + 2AgCl↓

Ba²⁺ + 2Cl⁻ + 2Ag⁺ + 2NO₃⁻ = Ba²⁺ + 2NO₃⁻ + 2AgCl↓

2Ag⁺ + 2Cl⁻  =  2AgCl↓

H₂SO₄ + Na₂S = Na₂SO₄ + H₂S↑

2H⁺ + SO₄²⁻ + 2Na⁺ +S²⁻ = 2Na⁺ +SO₄²⁻ + H₂S↑

2H⁺ + S²⁻ = H₂S↑

Answer 2

Molecular equation for the reaction between silver nitrate and barium chloride:

The molecular equation for the reaction between silver nitrate (AgNO3) and barium chloride (BaCl2) can be written as follows:

AgNO3 + BaCl2 → AgCl + Ba(NO3)2

In this reaction, silver nitrate reacts with barium chloride to form silver chloride and barium nitrate.

Ionic equation for the reaction between silver nitrate and barium chloride:

To write the ionic equation, we need to break down the reactants and products into their respective ions. The dissociation of silver nitrate and barium chloride in water can be represented as follows:

AgNO3 → Ag+ + NO3- BaCl2 → Ba2+ + 2Cl-

The ionic equation for the reaction between silver nitrate and barium chloride is:

Ag+ + Cl- → AgCl Ba2+ + 2NO3- → Ba(NO3)2

In this reaction, silver ions (Ag+) react with chloride ions (Cl-) to form silver chloride (AgCl), and barium ions (Ba2+) react with nitrate ions (NO3-) to form barium nitrate (Ba(NO3)2).

Molecular equation for the reaction between sulfuric acid and sodium sulfide:

The molecular equation for the reaction between sulfuric acid (H2SO4) and sodium sulfide (Na2S) can be written as follows:

H2SO4 + Na2S → H2S + Na2SO4

In this reaction, sulfuric acid reacts with sodium sulfide to form hydrogen sulfide and sodium sulfate.

Ionic equation for the reaction between sulfuric acid and sodium sulfide:

To write the ionic equation, we need to break down the reactants and products into their respective ions. The dissociation of sulfuric acid and sodium sulfide in water can be represented as follows:

H2SO4 → 2H+ + SO4^2- Na2S → 2Na+ + S^2-

The ionic equation for the reaction between sulfuric acid and sodium sulfide is:

2H+ + S^2- → H2S 2Na+ + SO4^2- → Na2SO4

In this reaction, hydrogen ions (H+) react with sulfide ions (S^2-) to form hydrogen sulfide (H2S), and sodium ions (Na+) react with sulfate ions (SO4^2-) to form sodium sulfate (Na2SO4).

Please note that these equations represent the overall reaction and may not account for any additional reactions or side reactions that may occur.