Electrolysis of a concentrated aqueous solution of a compound gave `C_2H_6` on anode. The compound is

Options

A. `CH_3COOK`
B. `CH_3CH_2COOK`
C. `CH_3COOC_2H_5`
D. `CH_3OCH_3`

Explanation

To determine the compound that yields ethane (C2H6) upon electrolysis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Electrolysis**: Electrolysis involves the breakdown of a compound into its components using electrical energy. In aqueous solutions, the ions present can lead to the formation of different products at the anode and cathode.

2. **Identifying the Product**: The problem states that ethane (C2H6) is produced at the anode during the electrolysis of a concentrated aqueous solution of a compound. This indicates that the compound must contain carbon and hydrogen, as ethane is a hydrocarbon.

3. **Considering Possible Compounds**: The electrolysis of salts of carboxylic acids can produce hydrocarbons. A common example is potassium ethanoate (CH3COOK), which is the potassium salt of acetic acid.

4. **Electrolysis of Potassium Ethanoate**:
- At the anode, the electrolysis of potassium ethanoate can lead to the formation of ethane (C2H6) through the reaction:
\[ 2 CH3COOK \rightarrow C2H6 + 2 CO2 + 2 KOH + H2 \]
- This reaction shows that ethane is produced at the anode along with carbon dioxide and potassium hydroxide.

5. **Conclusion**: Given that potassium ethanoate (CH3COOK) can yield ethane upon electrolysis, we conclude that the compound in question is potassium ethanoate.

### Final Answer:
The compound is **Potassium Ethanoate (CH3COOK)**.

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