Question

При помощи каких реакций можно осуществить следующий цикл превращения:а) С2Н4 -> СН3СОН-> C2H5OH-> CH3COOHб) CaC2 -> C2H2 -> CH3COH-> CH3COOH

Answer 1

a)

2С2Н4 + О2 = 2СН3СОН(окисление)

СН3 - СОН + Н2 = СН3 - СН2 - ОН(гидрирование)

2C2H5OH+2CO2=3CH3COOH 

б)

CaC2+H2O=C2H2+CaO

C2H2 + H2O = CH3COH(Реакция Кучерова) 

2CH3COH + O2 = 2CH3COOH(окисление)

 

Answer 2

Reactions for Cycle Transformation a):

The given cycle of transformations involves the conversion of C2H4 to CH3COOH. Let's break down the reactions step by step:

1. C2H4 to CH3COH (Ethanol): - The first step is the hydration of C2H4 to form CH3COH (Ethanol). - This reaction is an example of an addition reaction, where water (H2O) adds across the double bond of C2H4 to form CH3CH2OH (Ethanol). - The reaction is catalyzed by an acid, typically sulfuric acid (H2SO4) or phosphoric acid (H3PO4). - The reaction can be represented as follows: ``` C2H4 + H2O -> CH3CH2OH ```

2. CH3COH (Ethanol) to CH3COOH (Acetic Acid): - The second step involves the oxidation of CH3COH (Ethanol) to form CH3COOH (Acetic Acid). - This reaction is an example of an oxidation reaction, where the alcohol group (-OH) of CH3COH is oxidized to a carboxylic acid group (-COOH). - The reaction is typically carried out using an oxidizing agent such as potassium dichromate (K2Cr2O7) or chromic acid (H2CrO4). - The reaction can be represented as follows: ``` CH3CH2OH + [O] -> CH3COOH ```

Reactions for Cycle Transformation b):

The given cycle of transformations involves the conversion of CaC2 to CH3COOH. Let's break down the reactions step by step:

1. CaC2 to C2H2 (Acetylene): - The first step is the reaction of CaC2 with water (H2O) to form C2H2 (Acetylene). - This reaction is an example of a hydrolysis reaction, where water reacts with CaC2 to produce C2H2 gas. - The reaction can be represented as follows: ``` CaC2 + 2H2O -> C2H2 + Ca(OH)2 ```

2. C2H2 (Acetylene) to CH3COH (Ethanol): - The second step involves the addition of water (H2O) to C2H2 to form CH3COH (Ethanol). - This reaction is an example of an addition reaction, where water adds across the triple bond of C2H2 to form CH3CH2OH (Ethanol). - The reaction is typically carried out in the presence of a catalyst, such as mercuric sulfate (HgSO4). - The reaction can be represented as follows: ``` C2H2 + H2O -> CH3CH2OH ```

3. CH3COH (Ethanol) to CH3COOH (Acetic Acid): - The third step involves the oxidation of CH3COH (Ethanol) to form CH3COOH (Acetic Acid). - This reaction is the same as the second step in cycle transformation a). - The reaction can be represented as follows: ``` CH3CH2OH + [O] -> CH3COOH ```

Please note that the reactions mentioned above are simplified representations of the transformations and may involve additional reactants, conditions, or catalysts in practical applications.