exam tomorrw!! (1 Viewer)

[L3374]

uhm hello all
I need assistance!
ive been studying right and since our techer gave us the questions, i know what to expect
except two questions!

1) describe addition polymerisation from ethylene to polyethylene
2) a mass of 72.5g of ethanol was burnt completely in the air. calcualte the wolume of co2 that was produced at 25 C and 100 kPa.

for number two i just want the formula to go by NOT THE ANSWER!
and the same for Q. 1

THANK YOU!!!!!!!!!!!!

 

[Pwnage101]

These are very pedestrian questions.

1) plenty of info in any good textbook, outline the 3 main steps - initiation, propgation, termination

2) The chemical equation is:

C2H5OH (l) + 3O2 (g) --> 2CO2 (g) + 3H2O (l)/(g)

 

[dc1337]

A peroxide is split to form two radicals. The radical undergoes an addition reaction with an ethene monomer to produce an activated monomer. This activated monomer reacts with another monomer to produce an activated dimer. This process continues until a desired chain length is reached. At termination, the activated ends of two chains react with eacher other to deactivate ( the free electrons form a bond), forming a polymer.

 

[L3374]

*cyber gold?*
and thank you, I ended up finding the answers but you confirmed it.