Question

С концентрированной азотной кислотой будут реагировать оба веществаа) Cu(OH)₂ и CuCl₂b) Ca и CaOc) NaOH и Ba(NO₃)₂d) KOH и ZnSO₄e) Li₂SO₄ и CuO

Answer 1

Вариант b;азотная кислота концентрированная может реагировать с щелочными металлами,но специфически,а с оксидами и гидрооксидами она реагирует обычно.С солями из предложенных она не взаимодействует,т.к соль нерастворимая не образуется;поэтому Ca и Ca0.

Answer 2

Reactions with Concentrated Nitric Acid

Concentrated nitric acid (HNO3) is a strong oxidizing agent and can react with various substances. Let's examine the reactions of concentrated nitric acid with the given substances:

a) Cu(OH)₂ and CuCl₂: - Concentrated nitric acid can react with copper hydroxide (Cu(OH)₂) and copper chloride (CuCl₂). - The reaction with Cu(OH)₂ produces copper nitrate (Cu(NO₃)₂) and water (H₂O). - The reaction with CuCl₂ produces copper nitrate (Cu(NO₃)₂), chlorine gas (Cl₂), and water (H₂O). - The balanced chemical equations for these reactions are as follows: - Cu(OH)₂ + 2HNO₃ → Cu(NO₃)₂ + 2H₂O - CuCl₂ + 4HNO₃ → Cu(NO₃)₂ + 2Cl₂ + 2H₂O - These reactions can be classified as acid-base reactions and oxidation-reduction reactions.

b) Ca and CaO: - Concentrated nitric acid does not react with calcium (Ca) or calcium oxide (CaO). - Calcium is a less reactive metal and does not readily react with nitric acid. - Calcium oxide is a basic oxide and does not react with nitric acid.

c) NaOH and Ba(NO₃)₂: - Concentrated nitric acid can react with sodium hydroxide (NaOH) and barium nitrate (Ba(NO₃)₂). - The reaction with NaOH produces sodium nitrate (NaNO₃) and water (H₂O). - The reaction with Ba(NO₃)₂ produces barium nitrate (Ba(NO₃)₂), water (H₂O), and nitrogen dioxide gas (NO₂). - The balanced chemical equations for these reactions are as follows: - 2NaOH + HNO₃ → NaNO₃ + 2H₂O - Ba(NO₃)₂ + 2HNO₃ → Ba(NO₃)₂ + 2H₂O + 2NO₂ - These reactions can also be classified as acid-base reactions and oxidation-reduction reactions.

d) KOH and ZnSO₄: - Concentrated nitric acid can react with potassium hydroxide (KOH) and zinc sulfate (ZnSO₄). - The reaction with KOH produces potassium nitrate (KNO₃) and water (H₂O). - The reaction with ZnSO₄ produces zinc nitrate (Zn(NO₃)₂), sulfuric acid (H₂SO₄), and nitrogen dioxide gas (NO₂). - The balanced chemical equations for these reactions are as follows: - 2KOH + HNO₃ → KNO₃ + 2H₂O - ZnSO₄ + 2HNO₃ → Zn(NO₃)₂ + H₂SO₄ + 2NO₂ - These reactions can also be classified as acid-base reactions and oxidation-reduction reactions.

e) Li₂SO₄ and CuO: - Concentrated nitric acid can react with lithium sulfate (Li₂SO₄) and copper(II) oxide (CuO). - The reaction with Li₂SO₄ produces lithium nitrate (LiNO₃) and sulfuric acid (H₂SO₄). - The reaction with CuO produces copper nitrate (Cu(NO₃)₂) and water (H₂O). - The balanced chemical equations for these reactions are as follows: - Li₂SO₄ + 2HNO₃ → 2LiNO₃ + H₂SO₄ - CuO + 2HNO₃ → Cu(NO₃)₂ + H₂O - These reactions can also be classified as acid-base reactions and oxidation-reduction reactions.

Please note that these reactions are based on the information provided and may vary depending on reaction conditions and concentrations of the substances involved.

[[1]]