Question

A) Na→Na2O→Na2SO4 б) Ca→CaCl2→Ca(No3)2

Answer 1

Ответ:

А) 2Na + 2O2 = 2Na2O

Na2O + SO3 = Na2SO4

Б) Ca + Cl2 = CaCl2

CaCl2 + 2AgNO3 = Ca(NO3)2 + 2AgCl (осадок)

Объяснение:

Answer 2

Answer:

The given chemical equations are:

a) Na → Na2O → Na2SO4 b) Ca → CaCl2 → Ca(NO3)2

Let's break down each equation and explain the reactions step by step.

a) Na → Na2O → Na2SO4: 1. The first reaction is the formation of sodium oxide (Na2O) from sodium (Na). This is a synthesis reaction where two atoms of sodium combine with one molecule of oxygen to form sodium oxide. - Na + 1/2 O2 → Na2O.

2. The second reaction is the formation of sodium sulfate (Na2SO4) from sodium oxide (Na2O). This is a reaction between sodium oxide and sulfuric acid (H2SO4), resulting in the formation of sodium sulfate and water. - Na2O + H2SO4 → Na2SO4 + H2O.

b) Ca → CaCl2 → Ca(NO3)2: 1. The first reaction is the formation of calcium chloride (CaCl2) from calcium (Ca). This is a synthesis reaction where one atom of calcium reacts with two molecules of chlorine to form calcium chloride. - Ca + Cl2 → CaCl2.

2. The second reaction is the formation of calcium nitrate (Ca(NO3)2) from calcium chloride (CaCl2). This is a reaction between calcium chloride and nitric acid (HNO3), resulting in the formation of calcium nitrate and hydrochloric acid (HCl). - CaCl2 + 2HNO3 → Ca(NO3)2 + 2HCl.

Please note that the reactions mentioned above are simplified representations of the chemical processes. In reality, there might be additional steps or conditions involved in these reactions.

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