Question

В каких случаях возможна реакция в растворе между предложенными реагентами?1) сульфат натрия и нитрат калия2) оксид железа (3) и серной кислоты3) гидроксид алюминия и соляной кислоты4) фосфата магния и сульфида свинца (3)

Answer 1

1) BaO+2HCl=BaCl2+2H2O
2) Fe2O3 + 3H2SO4 = Fe2(SO4)3 + 3H2O
3) Al(OH)3 + 3HCl = AlCl3 + 3H2O 
4) Не знаю 

Answer 2

Reactions in Solution Between the Proposed Reagents

1) Sodium Sulfate and Potassium Nitrate: - When sodium sulfate and potassium nitrate are mixed in solution, a reaction is possible. The reaction involves the exchange of ions between the two compounds, leading to the formation of new compounds. This type of reaction is known as a double displacement reaction or a metathesis reaction. The general form of the reaction is: - Na2SO4 + KNO3 → NaNO3 + K2SO4 - This reaction occurs because the sodium ion (Na+) and the potassium ion (K+) switch places with the nitrate ion (NO3-) and the sulfate ion (SO4^2-), respectively.

2) Iron(III) Oxide and Sulfuric Acid: - When iron(III) oxide and sulfuric acid are mixed in solution, a reaction is possible. The reaction involves the acid-base reaction between the iron(III) oxide and the sulfuric acid. The general form of the reaction is: - Fe2O3 + 3H2SO4 → 2Fe(SO4)3 + 3H2O - This reaction results in the formation of iron(III) sulfate and water. The iron(III) oxide reacts with the sulfuric acid to produce iron(III) sulfate and water.

3) Aluminum Hydroxide and Hydrochloric Acid: - When aluminum hydroxide and hydrochloric acid are mixed in solution, a reaction is possible. The reaction involves the acid-base reaction between the aluminum hydroxide and the hydrochloric acid. The general form of the reaction is: - Al(OH)3 + 3HCl → AlCl3 + 3H2O - This reaction results in the formation of aluminum chloride and water. The aluminum hydroxide reacts with the hydrochloric acid to produce aluminum chloride and water.

4) Magnesium Phosphate and Lead(II) Sulfide: - When magnesium phosphate and lead(II) sulfide are mixed in solution, a reaction is possible. The reaction involves the exchange of ions between the two compounds, leading to the formation of new compounds. The general form of the reaction is: - Mg3(PO4)2 + 3PbS → 3MgS + Pb3(PO4)2 - This reaction occurs because the magnesium ion (Mg^2+) and the lead(II) ion (Pb^2+) switch places with the sulfide ion (S^2-) and the phosphate ion (PO4^3-), respectively.

In summary, reactions are possible in solution between the proposed reagents, resulting in the formation of new compounds through various types of chemical reactions such as double displacement and acid-base reactions