Question

Составьте уравнения реакций в соответствии со схемой превращений: C2H4-->C2H5OH-->C2H4-->CO2-->CaCO3--(над стрелкой +H2O,CO2-->X Укажите условия протекания реакций и назовите вещество Х. помогите пожалуйста!

Answer 1

 C2H4-->C2H5OH-->C2H4-->CO2-->CaCO3-->X

1) C2H4 + HOH (150 C, H+) = C2H5OH

2) C2H5OH (H2SO4) = C2H4 + H2O

3) C2H4 + 3O2 = 2CO2 + 2H2O 

4) CO2 + CaO = CaCO3 

5) CaCO3 + H2CO3 = Ca(HCO3)2

 

Answer 2

Reaction Equations:

The given scheme of transformations can be represented by the following reaction equations:

1. C2H4 → C2H5OH 2. C2H5OH → C2H4 + CO2 3. CO2 → CaCO3

Conditions and Substance X:

To determine the conditions and substance X, let's analyze each reaction step by step:

1. C2H4 → C2H5OH: - This reaction represents the addition of a hydrogen atom to ethene (C2H4) to form ethanol (C2H5OH). - The reaction is a typical example of an addition reaction, where a double bond is broken and new bonds are formed. - The reaction is catalyzed by a suitable catalyst, such as a transition metal catalyst like platinum (Pt) or palladium (Pd) [[1]].

2. C2H5OH → C2H4 + CO2: - This reaction represents the dehydration of ethanol (C2H5OH) to form ethene (C2H4) and carbon dioxide (CO2). - The reaction occurs under high temperature and in the presence of a suitable catalyst, such as alumina (Al2O3) or silica (SiO2) [[2]].

3. CO2 → CaCO3: - This reaction represents the formation of calcium carbonate (CaCO3) from carbon dioxide (CO2). - The reaction occurs in the presence of water (H2O) and under high pressure. - The reaction is known as carbonation and is commonly observed in natural processes like the formation of limestone [[3]].

Based on the given scheme, the substance X is carbon dioxide (CO2).

Summary:

In summary, the reaction scheme can be represented by the following equations:

1. C2H4 → C2H5OH (catalyzed by Pt or Pd) 2. C2H5OH → C2H4 + CO2 (under high temperature and in the presence of Al2O3 or SiO2) 3. CO2 → CaCO3 (in the presence of H2O and under high pressure)

The substance X in the reaction scheme is carbon dioxide (CO2).

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