Question

Mechanism of chrome tanning is based on:

• A. Coordinate covalent cross-linking
• B. Hydrogen bonding
• C. Covalent crosslinks
• D. Ionic bond

Hint:

Coordinate covalent bonding is the key to the stability and durability of chrome-tanned leather, making it highly resistant to wear and moisture.

Answer 1

The Correct Option is A

The primary mechanism of chrome tanning is based on coordinate covalent cross-linking, where the chromium ion forms stable bonds with the collagen molecules in the leather. This bond type is strong and provides the leather with enhanced durability, flexibility, and resistance to water. Step 1: Understanding Coordinate Covalent Cross-Linking
- Coordinate covalent bonds are formed when a chromium ion coordinates with the functional groups of collagen, particularly carboxyl groups, forming a stable cross-linked network. This structure improves the leather's physical properties.

Step 2: Conclusion
Coordinate covalent cross-linking is the mechanism that forms strong and durable leather in chrome tanning.