Question

Дополни формулами и коэффицентами следующие схемы реакций а) ?+HCl -> FeCl2+? b) CaO + ? -> Ca(NO3)2 + ? c) ? + Cu(OH)2 -> CuCl2+? d) H2SO4 + ? -> Na2SO4 + ? e) H2SO4 + ? -> BaSO4(стрелочка вниз) + ? f) HCl + ? -> AgCl(стрелочка вниз) + ? Укажи тип каждой реакции.

Answer 1

а) Fe+2HCl -> FeCl2+H2 р. замещения
b) CaO + 2HNO3 -> Ca(NO3)2 + H2O р. обмена
c) 2HCl + Cu(OH)2 -> CuCl2+2H2O р. обмена
d) H2SO4 + 2NaOH -> Na2SO4 + 2H2O р. обмена
e) H2SO4 + Ba(OH)2 -> BaSO4(стрелочка вниз) + 2H2O р. обмена
f) 2HCl + Ag2O -> 2AgCl(стрелочка вниз) + H2O р. обмена

Answer 2

А) Fe+2HCl -> FeCl2+H2-реакция замещения
b) CaO + 2HNO3 -> Ca(NO3)2 + H2O-реакция обмена)
c) 2HCl+ Cu(OH)2 -> CuCl2+2H2O-реакция нейтрализации(обмена)
d) H2SO4 + 2NaOH -> Na2SO4 + 2H2O-реакция нейтрализации(обмена)
e) H2SO4 + Ba(NO3)2 -> BaSO4(стрелочка вниз) + 2HNO3- реакция обмена
f) HCl + AgNO3 -> AgCl(стрелочка вниз) + HNO3-реакция обмена

Answer 3

a) HCl -> FeCl2

The reaction between hydrochloric acid (HCl) and iron (Fe) can be represented by the following balanced chemical equation:

2HCl + Fe -> FeCl2 + H2 [[1]]

In this reaction, hydrochloric acid reacts with iron to form iron(II) chloride and hydrogen gas. The coefficients in the balanced equation indicate the stoichiometry of the reaction, meaning that 2 moles of hydrochloric acid react with 1 mole of iron to produce 1 mole of iron(II) chloride and 1 mole of hydrogen gas.

This reaction is a single displacement reaction or redox reaction. The iron atoms in the solid iron are oxidized, losing electrons to form Fe2+ ions, while the hydrogen ions in the hydrochloric acid are reduced, gaining electrons to form hydrogen gas.

b) CaO + ? -> Ca(NO3)2 + ?

The reaction between calcium oxide (CaO) and nitric acid (HNO3) can be represented by the following balanced chemical equation:

CaO + 2HNO3 -> Ca(NO3)2 + H2O [[2]]

In this reaction, calcium oxide reacts with nitric acid to form calcium nitrate and water. The coefficients in the balanced equation indicate the stoichiometry of the reaction, meaning that 1 mole of calcium oxide reacts with 2 moles of nitric acid to produce 1 mole of calcium nitrate and 1 mole of water.

This reaction is a neutralization reaction. The calcium oxide, which is a base, reacts with the nitric acid, which is an acid, to form a salt (calcium nitrate) and water.

c) ? + Cu(OH)2 -> CuCl2 + ?

The reaction between copper(II) hydroxide (Cu(OH)2) and hydrochloric acid (HCl) can be represented by the following balanced chemical equation:

2HCl + Cu(OH)2 -> CuCl2 + 2H2O [[3]]

In this reaction, hydrochloric acid reacts with copper(II) hydroxide to form copper(II) chloride and water. The coefficients in the balanced equation indicate the stoichiometry of the reaction, meaning that 2 moles of hydrochloric acid react with 1 mole of copper(II) hydroxide to produce 1 mole of copper(II) chloride and 2 moles of water.

This reaction is also a neutralization reaction. The hydrochloric acid, which is an acid, reacts with the copper(II) hydroxide, which is a base, to form a salt (copper(II) chloride) and water.

d) H2SO4 + ? -> Na2SO4 + ?

The reaction between sulfuric acid (H2SO4) and sodium hydroxide (NaOH) can be represented by the following balanced chemical equation:

2NaOH + H2SO4 -> Na2SO4 + 2H2O [[4]]

In this reaction, sulfuric acid reacts with sodium hydroxide to form sodium sulfate and water. The coefficients in the balanced equation indicate the stoichiometry of the reaction, meaning that 2 moles of sodium hydroxide react with 1 mole of sulfuric acid to produce 1 mole of sodium sulfate and 2 moles of water.

This reaction is also a neutralization reaction. The sulfuric acid, which is an acid, reacts with the sodium hydroxide, which is a base, to form a salt (sodium sulfate) and water.

e) H2SO4 + ? -> BaSO4 (down arrow) + ?

The reaction between sulfuric acid (H2SO4) and barium chloride (BaCl2) can be represented by the following balanced chemical equation:

H2SO4 + BaCl2 -> BaSO4 + 2HCl [[5]]

In this reaction, sulfuric acid reacts with barium chloride to form barium sulfate and hydrochloric acid. The coefficients in the balanced equation indicate the stoichiometry of the reaction, meaning that 1 mole of sulfuric acid reacts with 1 mole of barium chloride to produce 1 mole of barium sulfate and 2 moles of hydrochloric acid.

This reaction is a double displacement reaction or precipitation reaction. The sulfuric acid and barium chloride exchange ions to form barium sulfate, which is insoluble and precipitates out of the solution, and hydrochloric acid.

f) HCl + ? -> AgCl (down arrow) + ?

The reaction between hydrochloric acid (HCl) and silver nitrate (AgNO3) can be represented by the following balanced chemical equation:

HCl + AgNO3 -> AgCl + HNO3 [[6]]

In this reaction, hydrochloric acid reacts with silver nitrate to form silver chloride and nitric acid. The coefficients in the balanced equation indicate the stoichiometry of the reaction, meaning that 1 mole of hydrochloric acid reacts with 1 mole of silver nitrate to produce 1 mole of silver chloride and 1 mole of nitric acid.

This reaction is also a double displacement reaction or precipitation reaction. The hydrochloric acid and silver nitrate exchange ions to form silver chloride, which is insoluble and precipitates out of the solution, and nitric acid.

I hope this helps! Let me know if you have any further questions.