Question

Хэлп1) Реакция ионного обмена идет до конца в результате образования слабого электролита при взаимодействии: а) гидроксида бария с сульфатом магния б)оксида магния с серной кислотой в)цинка с соляной кислотой г)карбоната натрия с нитратом серебра 2)При комнатной температуре химическая реакция будет наблюдаться при смешивании: а)Cl2 и H2 б)K и H2O в)S и H2O г)Zn и H2O

Answer 1

1.б(Слабые электролиты:многие органические кислоты,некоторые неорганические кислоты,малорастворимые соли,основания и т.п)
2.б

Answer 2

Reaction of Ion Exchange

The reaction of ion exchange occurs when ions from two different compounds exchange places, resulting in the formation of new compounds. In some cases, this reaction proceeds to completion, leading to the formation of a weak electrolyte. Let's examine the reactions you mentioned and their outcomes:

a) Reaction between barium hydroxide and magnesium sulfate: - The reaction can be represented as: Ba(OH)2 + MgSO4 → BaSO4 + Mg(OH)2. - Barium sulfate (BaSO4) is a weak electrolyte, while magnesium hydroxide (Mg(OH)2) is a strong base. - The formation of a weak electrolyte (BaSO4) indicates that the reaction proceeds to completion [[1]].

b) Reaction between magnesium oxide and sulfuric acid: - The reaction can be represented as: MgO + H2SO4 → MgSO4 + H2O. - Magnesium sulfate (MgSO4) is a strong electrolyte, while water (H2O) is a weak electrolyte. - The formation of a weak electrolyte (H2O) indicates that the reaction proceeds to completion [[2]].

c) Reaction between zinc and hydrochloric acid: - The reaction can be represented as: Zn + 2HCl → ZnCl2 + H2. - Zinc chloride (ZnCl2) is a strong electrolyte, while hydrogen gas (H2) is a non-electrolyte. - The formation of a non-electrolyte (H2) indicates that the reaction proceeds to completion [[3]].

d) Reaction between sodium carbonate and silver nitrate: - The reaction can be represented as: Na2CO3 + 2AgNO3 → Ag2CO3 + 2NaNO3. - Silver carbonate (Ag2CO3) is a weak electrolyte, while sodium nitrate (NaNO3) is a strong electrolyte. - The formation of a weak electrolyte (Ag2CO3) indicates that the reaction proceeds to completion [[4]].

Chemical Reactions at Room Temperature

At room temperature, certain chemical reactions can occur when specific substances are mixed. Let's explore the reactions you mentioned:

a) Mixing chlorine gas (Cl2) and hydrogen gas (H2): - The reaction can be represented as: Cl2 + H2 → 2HCl. - Hydrogen chloride (HCl) is a strong electrolyte. - The formation of a strong electrolyte (HCl) indicates that the reaction proceeds to completion [[5]].

b) Mixing potassium (K) and water (H2O): - The reaction can be represented as: 2K + 2H2O → 2KOH + H2. - Potassium hydroxide (KOH) is a strong base, while hydrogen gas (H2) is a non-electrolyte. - The formation of a non-electrolyte (H2) indicates that the reaction proceeds to completion [[6]].

c) Mixing sulfur (S) and water (H2O): - The reaction can be represented as: S + H2O → H2SO3. - Sulfurous acid (H2SO3) is a weak electrolyte. - The formation of a weak electrolyte (H2SO3) indicates that the reaction proceeds to completion [[7]].

d) Mixing zinc (Zn) and water (H2O): - The reaction can be represented as: Zn + 2H2O → Zn(OH)2 + H2. - Zinc hydroxide (Zn(OH)2) is a weak electrolyte, while hydrogen gas (H2) is a non-electrolyte. - The formation of a non-electrolyte (H2) indicates that the reaction proceeds to completion [[8]].

Please let me know if there's anything else I can help you with!

Answer 3

Reaction of Ion Exchange:

The reaction of ion exchange occurs when ions from one compound are exchanged with ions from another compound. This reaction continues until equilibrium is reached, resulting in the formation of a weak electrolyte. Let's examine the specific reactions mentioned:

a) Reaction between barium hydroxide and magnesium sulfate: - The reaction can be represented as follows: `Ba(OH)2 + MgSO4 -> BaSO4 + Mg(OH)2` - This reaction involves the exchange of barium ions (Ba2+) from barium hydroxide with sulfate ions (SO42-) from magnesium sulfate. The products formed are barium sulfate (BaSO4) and magnesium hydroxide (Mg(OH)2). - The resulting barium sulfate is a weak electrolyte.

b) Reaction between magnesium oxide and sulfuric acid: - The reaction can be represented as follows: `MgO + H2SO4 -> MgSO4 + H2O` - This reaction involves the exchange of magnesium ions (Mg2+) from magnesium oxide with hydrogen ions (H+) from sulfuric acid. The products formed are magnesium sulfate (MgSO4) and water (H2O). - The resulting magnesium sulfate is a weak electrolyte.

c) Reaction between zinc and hydrochloric acid: - The reaction can be represented as follows: `Zn + 2HCl -> ZnCl2 + H2` - This reaction involves the exchange of zinc ions (Zn2+) from zinc with chloride ions (Cl-) from hydrochloric acid. The products formed are zinc chloride (ZnCl2) and hydrogen gas (H2). - The resulting zinc chloride is a weak electrolyte.

d) Reaction between sodium carbonate and silver nitrate: - The reaction can be represented as follows: `Na2CO3 + 2AgNO3 -> 2NaNO3 + Ag2CO3` - This reaction involves the exchange of sodium ions (Na+) from sodium carbonate with silver ions (Ag+) from silver nitrate. The products formed are sodium nitrate (NaNO3) and silver carbonate (Ag2CO3). - The resulting silver carbonate is a weak electrolyte.

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