Which compound of chromium is widely used in tanning of leather

Options

A. `CrCl_(3)`
B. `Cr_(2)O_(3)`
C. `CrO_(2)Cl_(2)`
D. `K_(2)SO_(4).Cr_(2)(SO_(4))_(3).24H_(2)O`

Answer

To answer the question about which compound of chromium is widely used in the tanning of leather, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Tanning Process**:
- Tanning is a chemical process that converts animal skin into leather. It involves treating the skin with various chemicals to make it more durable and less susceptible to decomposition.

2. **Identify the Chromium Compound Used in Tanning**:
- The compound of chromium that is commonly used in the tanning process is known as "Chromalum."

3. **Know the Chemical Formula of Chromalum**:
- The chemical formula for Chromalum is \( K_2SO_4 \cdot Cr_2(SO_4)_3 \cdot 24H_2O \). This indicates that it is a double sulfate of potassium and chromium.

4. **Select the Correct Option**:
- If presented with multiple-choice options, we would look for the option that matches the formula \( K_2SO_4 \cdot Cr_2(SO_4)_3 \cdot 24H_2O \).

5. **Conclusion**:
- Therefore, the compound of chromium widely used in the tanning of leather is Chromalum.

### Final Answer:
The compound of chromium widely used in the tanning of leather is Chromalum, with the chemical formula \( K_2SO_4 \cdot Cr_2(SO_4)_3 \cdot 24H_2O \).