Which of the following is used in the prepration of chlorine ?

Options

A. Only `MnO_(2)`
B. Only `KMnO_(4)`
C. Both `MnO_(2)` and `KMnO_(4)`
D. Either `MnO_(2)` and `KMnO_(4)`

Explanation

To determine which substances are used in the preparation of chlorine, we can analyze the reactions involving MnO2 and KMnO4 with hydrochloric acid (HCl).

### Step-by-Step Solution:

1. **Identify the Reactions**:
- Chlorine can be prepared using manganese dioxide (MnO2) and potassium permanganate (KMnO4) in the presence of hydrochloric acid (HCl).

2. **Reaction with MnO2**:
- The reaction of MnO2 with concentrated HCl can be written as:
\[ \text{MnO}_2 + 4 \text{HCl} \rightarrow \text{MnCl}_2 + 2 \text{H}_2\text{O} + \text{Cl}_2 \]
- In this reaction, manganese dioxide reacts with hydrochloric acid to produce manganese(II) chloride, water, and chlorine gas.

3. **Reaction with KMnO4**:
- The reaction of KMnO4 with HCl can be represented as:
\[ 2 \text{KMnO}_4 + 16 \text{HCl} \rightarrow 2 \text{KCl} + 2 \text{MnCl}_2 + 8 \text{H}_2\text{O} + 2 \text{Cl}_2 \]
- Here, potassium permanganate reacts with hydrochloric acid to yield potassium chloride, manganese(II) chloride, water, and chlorine gas.

4. **Conclusion**:
- Both MnO2 and KMnO4 can be used to prepare chlorine gas when reacted with hydrochloric acid.
- Therefore, the correct answer is **Option C: both MnO2 and KMnO4**.