Question

В водном растворе образует одинаковые анионы вещества1)FeCl3 и Fe(OH)32)BaSO4 и Na2SO43)Ba(OH)2 и Cu(OH)24)AgNO3 и HNO3

Answer 1

4) AgNO3 = Ag+ + NO3-
HNO3 = H+ + NO3-
NO3- нитрат-ион - одинаковые анионы.

Answer 2

Anions Formed in Aqueous Solutions

When certain substances dissolve in water, they dissociate into ions. Let's explore the anions formed in the aqueous solutions of the given substances.

1. FeCl3 and Fe(OH)3: - In the case of FeCl3, it dissociates into Fe^3+ cations and Cl^- anions in aqueous solution [[1]]. - For Fe(OH)3, it dissociates into Fe^3+ cations and OH^- anions in aqueous solution [[2]].

2. BaSO4 and Na2SO4: - BaSO4 does not dissociate significantly in water, so it does not form Ba^2+ or SO4^2- ions in solution [[3]]. - Na2SO4 dissociates into 2Na^+ cations and SO4^2- anions in aqueous solution [[4]].

3. Ba(OH)2 and Cu(OH)2: - Ba(OH)2 dissociates into Ba^2+ cations and 2OH^- anions in aqueous solution [[5]]. - Cu(OH)2 dissociates into Cu^2+ cations and 2OH^- anions in aqueous solution [[6]].

4. AgNO3 and HNO3: - AgNO3 dissociates into Ag^+ cations and NO3^- anions in aqueous solution [[7]]. - HNO3 dissociates into H^+ cations and NO3^- anions in aqueous solution [[8]].

In summary, the anions formed in the aqueous solutions of the given substances are: 1. FeCl3: Cl^- 2. Fe(OH)3: OH^- 3. BaSO4: Does not significantly dissociate into ions in water. 4. Na2SO4: SO4^2- 5. Ba(OH)2: OH^- 6. Cu(OH)2: OH^- 7. AgNO3: NO3^- 8. HNO3: NO3^-