What are the structural differences between low-density and high-density poly(ethene)? - Leaving Cert Chemistry - Question B - 2002
Question B
What are the structural differences between low-density and high-density poly(ethene)?
Worked Solution & Example Answer:What are the structural differences between low-density and high-density poly(ethene)? - Leaving Cert Chemistry - Question B - 2002
Step 1
LDP shorter chains (HDP longer chains)
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Low-density poly(ethene) (LDP) has shorter polymer chains compared to high-density poly(ethene) (HDP), which features longer and more linear chains.
Step 2
LDP much branching (HDP little branching)
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
LDP exhibits significant branching in its structure, while HDP has minimal branching, resulting in a more uniform chain structure.
Sign up now to view full answer, or log in if you already have an account!
Answer
The molecular arrangement of LDP is such that the chains are packed loosely, which contributes to its lower density. In contrast, HDP molecules are packed tightly, giving it a higher density.
Step 4
LDP flexible (HDP rigid)
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
LDP is characterized by flexibility due to its loose packing and branched structure, whereas HDP is generally rigid owing to its tightly packed and linear structure.
Join the Leaving Cert students using SimpleStudy...
