A mixture of methane, ethylene and acetylene gases is passed through a Wolf bottle containing ammoniacal cuprous chloride. The gas coming out is

Options

A. Methane
B. Acetylene
C. A mixture of methane and ethylene
D. The original mixture

Explanation

To solve the problem, we need to analyze the behavior of the gases when passed through a Wolf bottle containing ammoniacal cuprous chloride.

### Step-by-Step Solution:

1. **Identify the Gases**: The mixture consists of three gases: methane (CH₄), ethylene (C₂H₄), and acetylene (C₂H₂).

2. **Understand the Reaction**: The Wolf bottle containing ammoniacal cuprous chloride primarily reacts with terminal alkynes. Terminal alkynes are hydrocarbons that contain a triple bond between carbon atoms, with at least one hydrogen atom attached to one of the carbons involved in the triple bond.

3. **Classify the Gases**:
- **Methane (CH₄)**: This is an alkane and does not react with ammoniacal cuprous chloride.
- **Ethylene (C₂H₄)**: This is an alkene and also does not react with ammoniacal cuprous chloride.
- **Acetylene (C₂H₂)**: This is a terminal alkyne and will react with ammoniacal cuprous chloride.

4. **Reaction of Acetylene**: When acetylene is passed through the Wolf bottle, it reacts with the ammoniacal cuprous chloride to form a complex, which results in the consumption of acetylene gas.

5. **Gases Coming Out**: Since methane and ethylene do not react, they will come out of the Wolf bottle unchanged. Only acetylene will be absorbed in the reaction.

6. **Final Answer**: The gas coming out of the Wolf bottle will be a mixture of methane (CH₄) and ethylene (C₂H₄).

### Conclusion:
The gas coming out of the Wolf bottle is a mixture of methane and ethylene.

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