The compouhnd formed when alcoholic solution of ethylene dibromide is heated with granualted zinc is

Options

A. ethene
B. ethyne
C. ethane
D. bromoethane

Explanation

To solve the question regarding the compound formed when an alcoholic solution of ethylene dibromide is heated with granulated zinc, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants are ethylene dibromide (C2H4Br2) and granulated zinc (Zn).
- Ethylene dibromide has the structure:
\[ \text{BrCH}_2\text{CH}_2\text{Br} \]

2. **Understand the Reaction Conditions**:
- The reaction is performed in an alcoholic solution, which typically facilitates elimination reactions.
- Heating the mixture helps to drive the reaction forward.

3. **Recognize the Type of Reaction**:
- The reaction is a dehalogenation reaction, where halogen atoms (bromine in this case) are removed.
- This can also be classified as an elimination reaction since we are eliminating bromine atoms from the compound.

4. **Determine the Mechanism**:
- Granulated zinc acts as a reducing agent and removes the bromine atoms from ethylene dibromide.
- Each bromine atom is replaced by hydrogen, leading to the formation of ethene (C2H4).

5. **Write the Balanced Reaction**:
- The balanced reaction can be represented as:
\[ \text{C}_2\text{H}_4\text{Br}_2 + \text{Zn} \rightarrow \text{C}_2\text{H}_4 + \text{ZnBr}_2 \]
- Here, ethene (C2H4) is formed along with zinc bromide (ZnBr2).

6. **Conclusion**:
- The compound formed when an alcoholic solution of ethylene dibromide is heated with granulated zinc is ethene (C2H4).

### Final Answer:
The compound formed is **ethene (C2H4)**.

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