On electrolysis of sodium succinate, the alkene obtained is ______ and nature of solution after electrolysis is _______

Options

A. `overset(CH_(2))overset(||)(CH_(2))` and acidic
B. `overset(CH_(2))overset(||)(CH_(2))` and basic
C. `overset(CH)overset(|||)(CH)` and acidic
D. `overset(CH_(3))overset(|)(CH_(3))` and basic

Answer

To solve the question regarding the electrolysis of sodium succinate, we will follow these steps:

### Step 1: Identify the structure of sodium succinate
Sodium succinate is the sodium salt of succinic acid, which is a dicarboxylic acid with the formula HOOC-CH2-CH2-COOH. When it forms a salt with sodium, it can be represented as NaOOC-CH2-CH2-COONa.

### Step 2: Understand the process of electrolysis
During the electrolysis of sodium succinate, the anion (the succinate ion) will undergo oxidation at the anode. The succinate ion (C4H4O4^2-) will lose electrons, leading to the formation of radicals.

### Step 3: Oxidation at the anode
At the anode, the succinate ion will lose electrons (oxidation). This process will result in the formation of carbon dioxide (CO2) and a radical intermediate. The reaction can be summarized as follows:
\[ \text{C}_4\text{H}_4\text{O}_4^{2-} \rightarrow \text{Radicals} + 2 \text{CO}_2 + 2 \text{e}^- \]

### Step 4: Formation of alkene
The radical intermediates formed will then dimerize to form an alkene. The specific alkene formed from the dimerization of the radicals is ethylene (C2H4), which can be represented as:
\[ \text{Radicals} \rightarrow \text{C}_2\text{H}_4 \text{ (Ethylene)} \]

### Step 5: Reduction at the cathode
At the cathode, hydrogen ions (H+) will gain electrons to form hydrogen gas (H2):
\[ 2 \text{H}^+ + 2 \text{e}^- \rightarrow \text{H}_2 \]

### Step 6: Nature of the solution after electrolysis
The electrolysis of sodium succinate will also produce carbonic acid (H2CO3) from the CO2 released in the solution. The presence of carbonic acid indicates that the solution becomes acidic.

### Final Answer
Thus, the alkene obtained from the electrolysis of sodium succinate is **ethylene (C2H4)**, and the nature of the solution after electrolysis is **acidic**.

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