Question

1) СO2->CO->CO2->Na2CO3->NaHCO3->CO2 2)C->CO2->K2CO3->CaCO3->CO2->Mq(HCO3)2->MgCO3->Mgпомагите пожалуста!!!!!!!

Answer 1

1)CO2 + C = 2CO

2)2CO + O2 = 2CO2

3)Na2O + CO2 = Na2CO3

4)H2CO3 + Na2CO3 = 2NaHCO3

5)NaHCO3 + SO2(газ) = NaHSO3 + CO2↑

 

 

2 цепочка

1)O2 + C(графит) = CO2

2)K2O + CO2 = K2CO3

3)K2CO3 + Ca(OH)2(насыщ.) = CaCO3↓ + 2KOH

4)
CaCO3 = CaO + CO2

5)Mg(OH)2(суспензия) + 2CO2 = Mg(HCO3)2(р.)

6)Mg(HCO3)2(р.) = MgCO3↓ + H2O + CO2

7

Answer 2

Chemical Reactions and Transformations

1) The given sequence of reactions can be summarized as follows:

CO2 -> CO -> CO2 -> Na2CO3 -> NaHCO3 -> CO2

2) Another sequence of reactions is provided:

C -> CO2 -> K2CO3 -> CaCO3 -> CO2 -> Mq(HCO3)2 -> MgCO3 -> Mg

Let's break down each reaction and explain the transformations that occur.

1) CO2 -> CO -> CO2 -> Na2CO3 -> NaHCO3 -> CO2

The first reaction is the conversion of carbon dioxide (CO2) into carbon monoxide (CO). This reaction can be represented as:

CO2 -> CO

The reverse reaction can also occur:

CO -> CO2

Next, carbon monoxide (CO) reacts with carbon dioxide (CO2) to form sodium carbonate (Na2CO3):

CO + CO2 -> Na2CO3

Sodium carbonate (Na2CO3) can further react with water (H2O) to form sodium bicarbonate (NaHCO3):

Na2CO3 + H2O -> NaHCO3

Finally, sodium bicarbonate (NaHCO3) can decompose to produce carbon dioxide (CO2):

NaHCO3 -> CO2

2) C -> CO2 -> K2CO3 -> CaCO3 -> CO2 -> Mq(HCO3)2 -> MgCO3 -> Mg

The second sequence starts with the conversion of carbon (C) into carbon dioxide (CO2):

C -> CO2

Carbon dioxide (CO2) can react with potassium hydroxide (KOH) to form potassium carbonate (K2CO3):

CO2 + 2 KOH -> K2CO3 + H2O

Potassium carbonate (K2CO3) can further react with calcium chloride (CaCl2) to form calcium carbonate (CaCO3):

K2CO3 + CaCl2 -> CaCO3 + 2 KCl

Calcium carbonate (CaCO3) can decompose to produce carbon dioxide (CO2):

CaCO3 -> CO2 + CaO

Carbon dioxide (CO2) can react with a metal hydroxide (Mq(OH)2) to form a metal bicarbonate (Mq(HCO3)2):

CO2 + Mq(OH)2 -> Mq(HCO3)2

The metal bicarbonate (Mq(HCO3)2) can further react with magnesium chloride (MgCl2) to form magnesium carbonate (MgCO3):

Mq(HCO3)2 + MgCl2 -> MgCO3 + 2 MqCl

Finally, magnesium carbonate (MgCO3) can decompose to produce magnesium oxide (MgO):

MgCO3 -> MgO + CO2

Please note that the specific metals and compounds involved in the reactions are not provided in the question. The reactions mentioned above are general representations of the transformations that can occur.