The general formula of alkyne is

Options

A. `C_n H_(2n+2)`
B. `C_n H_(2n-2)`
C. `C_n H_n`
D. `C_n H_(2n)`

Explanation

To determine the general formula of alkynes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Alkynes**:
- Alkynes are a class of hydrocarbons that contain at least one triple bond between carbon atoms. They are classified as unsaturated hydrocarbons.

2. **General Formula Structure**:
- The general formula for hydrocarbons can be represented as \( C_nH_m \), where \( n \) is the number of carbon atoms and \( m \) is the number of hydrogen atoms.

3. **Establishing the Relationship**:
- For alkynes, the relationship between carbon and hydrogen can be derived from the fact that each triple bond reduces the number of hydrogen atoms by 2 compared to alkanes (which have single bonds).
- The general formula for alkanes is \( C_nH_{2n+2} \).

4. **Deriving the General Formula for Alkynes**:
- Since alkynes have a triple bond, they will have 2 fewer hydrogen atoms than the corresponding alkane. Therefore, the formula for alkynes becomes:
\[ H = 2n - 2 \]
- This gives us the general formula for alkynes as:
\[ C_nH_{2n-2} \]

5. **Example Calculation**:
- If we take \( n = 3 \) (for a 3-carbon alkyne), substituting into the formula gives:
\[ H = 2(3) - 2 = 6 - 2 = 4 \]
- Thus, for three carbon atoms, the formula is \( C_3H_4 \), which confirms that it is indeed an alkyne.

6. **Conclusion**:
- The general formula for alkynes is:
\[ C_nH_{2n-2} \]

### Final Answer:
The general formula of alkyne is \( C_nH_{2n-2} \).

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