Which method of purification is represented by the following equations
`Ti +2I_(2) overset(523K)rarr TiI_(4) overset(1700K)rarr Ti +2I_(2)`

Options

A. Zone refining
B. Mond's process
C. Cupellation
D. van Arkel process

Answer

To determine the method of purification represented by the given equations, we can analyze the reactions step by step.

### Step-by-Step Solution:

1. **Identify the Reactants and Products:**
- The first equation shows titanium (Ti) reacting with iodine (I₂) to form titanium iodide (TiI₄) at a temperature of 523 K.
- The second equation shows titanium iodide (TiI₄) decomposing back into titanium (Ti) and iodine (I₂) at a higher temperature of 1700 K.

2. **Understanding the Process:**
- The initial reaction at 523 K indicates that titanium is being converted into titanium iodide, which suggests a method of purification where titanium is combined with iodine to form a compound.
- The subsequent reaction at 1700 K indicates that the titanium iodide is being decomposed back into its elemental forms, which allows for the separation of pure titanium from iodine.

3. **Linking to Purification Methods:**
- The process described is characteristic of the **Mohn's process**, which is specifically used for the purification of titanium. In this process, titanium is converted into titanium iodide and then back to titanium, effectively removing impurities.

4. **Conclusion:**
- Based on the reactions and the understanding of the purification methods, the method represented by the equations is the **Mohn's process**.

### Final Answer:
The method of purification represented by the given equations is **Mohn's process**.

---