A diacyl peroxideQuestion 5 options:Is involved in a propagation stepIncreases chain length by one monomer unitWill not undergo homolytic

🔬 What Is a Diacyl Peroxide?

A diacyl peroxide is an organic compound with the general structure R-C(=O)-O-O-C(=O)-R. It is known for its ability to undergo homolytic cleavage, making it highly reactive and useful in radical reactions, especially in polymer chemistry.

🧪 Role in Chemical Reactions

• Initiation: Diacyl peroxides readily undergo homolytic bond cleavage of the O–O bond when heated or exposed to light, forming RCO· radicals.
  ✔ Typically involved in an initiation process
• Homolytic Cleavage: The weak O–O bond makes these compounds ideal radical initiators.
  ✔ Undergo homolytic bond cleavage
• Chain Propagation: Diacyl peroxides themselves are not usually involved in propagation steps directly; their job is to initiate the radical chain.
  ✘ Not typically involved in a propagation step
• Polymer Chain Length: Diacyl peroxides do not increase chain length by one monomer unit — that occurs during propagation.
  ✘ Does not increase chain length directly

✅ Final Answer

The two correct statements about diacyl peroxides are:

Therefore, the correct choice is: