Question

закончите уравнения химических реакций и расставьте коэффициенты определите тип каждой из них (a) Na2SO3 + HCI + (b) Mg(OH)2 → MgO + ....., (c) P + ....... → P205 (d) ....... + FeCl2 – MgCl2 + Fe.

Answer 1

Ответ:

(a) Na2SO3 + 2HCI = H2SiO3 + 2NaCl     обмена

(b) Mg(OH)2 = MgO + H2O    разложения

(c) 4P + 5O2 = 2P2O5      соединения

(d) Mg + FeCl2 =  MgCl2 + Fe    замещения

Объяснение:

Answer 2

(a) Na2SO3 + HCl → NaCl + H2O + SO2

The balanced equation for the reaction between sodium sulfite (Na2SO3) and hydrochloric acid (HCl) is:

Na2SO3 + 2HCl → 2NaCl + H2O + SO2 [[1]]

This is a double displacement reaction, also known as a neutralization reaction, where the sodium sulfite reacts with hydrochloric acid to form sodium chloride, water, and sulfur dioxide.

(b) Mg(OH)2 → MgO + H2O

The balanced equation for the decomposition of magnesium hydroxide (Mg(OH)2) is:

Mg(OH)2 → MgO + H2O [[2]]

This is a decomposition reaction, where magnesium hydroxide breaks down into magnesium oxide and water.

(c) P4 + 5O2 → P4O10

The balanced equation for the reaction between phosphorus (P4) and oxygen (O2) is:

P4 + 5O2 → P4O10 [[3]]

This is a combustion reaction, where phosphorus reacts with oxygen to form tetraphosphorus decoxide.

(d) FeCl2 + Mg → MgCl2 + Fe

The balanced equation for the reaction between iron(II) chloride (FeCl2) and magnesium (Mg) is:

FeCl2 + Mg → MgCl2 + Fe [[4]]

This is a single displacement reaction, where magnesium reacts with iron(II) chloride to form magnesium chloride and iron.

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