Question

1. Хлорид меди (II) вступает в реакцию с1)гидроксидом железа (II)2)гидроксидом натрия3)нитратом серебра4)железом5)хлоридом натрия2. Осадок не образуется при сливании растворов1)карбоната натрия и соляной кислоты2)нитрата калия и гидроксида натрия3)хлорида бария и серной кислоты4)сульфата алюминия и гидроксида калия5)нитрата свинца и сульфида натрия3. В водном растворе необратимо взаимодействуют пары ионов1)Ag+ и Cl-2)H+ и OH-3)Ag+ и F-4)H+ и Cl-

Answer 1

1. 1),5)4)
2.2)1)4)
Я это проходила,задание три ещё нетпрости

Answer 2

Reaction of Copper (II) Chloride with Various Substances:

1. Copper (II) chloride reacts with iron (II) hydroxide to form copper (II) hydroxide and iron (II) chloride: - Equation: CuCl2 + Fe(OH)2 -> Cu(OH)2 + FeCl2 - Source: [[1]]

2. Copper (II) chloride reacts with sodium hydroxide to form copper (II) hydroxide and sodium chloride: - Equation: CuCl2 + 2NaOH -> Cu(OH)2 + 2NaCl - Source: [[2]]

3. Copper (II) chloride reacts with silver nitrate to form silver chloride and copper (II) nitrate: - Equation: 2AgNO3 + CuCl2 -> 2AgCl + Cu(NO3)2 - Source: [[3]]

4. Copper (II) chloride reacts with iron to form copper and iron (II) chloride: - Equation: CuCl2 + Fe -> Cu + FeCl2 - Source: [[4]]

5. Copper (II) chloride reacts with sodium chloride to form copper (II) chloride and sodium chloride: - Equation: CuCl2 + 2NaCl -> CuCl2 + 2NaCl - Source: [[5]]

Reactions without Formation of Precipitate:

1. When sodium carbonate and hydrochloric acid are mixed, no precipitate is formed. Instead, carbon dioxide gas is released: - Equation: Na2CO3 + 2HCl -> 2NaCl + H2O + CO2 - Source: [[6]]

2. When potassium nitrate and sodium hydroxide are mixed, no precipitate is formed. Instead, a neutralization reaction occurs: - Equation: KNO3 + NaOH -> KNO3 + NaOH - Source: [[7]]

3. When barium chloride and sulfuric acid are mixed, no precipitate is formed. Instead, barium sulfate is formed, which is soluble in water: - Equation: BaCl2 + H2SO4 -> BaSO4 + 2HCl - Source: [[8]]

4. When aluminum sulfate and potassium hydroxide are mixed, no precipitate is formed. Instead, a neutralization reaction occurs: - Equation: Al2(SO4)3 + 6KOH -> 2Al(OH)3 + 3K2SO4 - Source: [[9]]

5. When lead nitrate and sodium sulfide are mixed, no precipitate is formed. Instead, lead sulfide is formed, which is insoluble in water: - Equation: Pb(NO3)2 + Na2S -> PbS + 2NaNO3 - Source: [[10]]

Irreversible Reactions in Aqueous Solution:

1. The reaction between silver ions (Ag+) and chloride ions (Cl-) in aqueous solution is irreversible and forms silver chloride, which is insoluble in water: - Equation: Ag+ + Cl- -> AgCl - Source: [[11]]

2. The reaction between hydrogen ions (H+) and hydroxide ions (OH-) in aqueous solution is irreversible and forms water: - Equation: H+ + OH- -> H2O - Source: [[12]]

Please let me know if you need further clarification or have any other questions!