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Yes. It's because one is more reactive and displaces the other one out of the solution.

+1. I hate arrogant people who turn out to be wrong...

lols i was about to inbox you to tell you to update your sig. And meh. I still think A could be right.

The process from cellulose to ethene might not be efficient but it is widely used. The polymerisation step is the same anyway. On the label it says that the plastic cups were made from plants so maybe the board of studies is delusional...

Yeah.. Except making ethanol/ethylene is actually a well known process which is used widely in the industry.... I normally agree with the stuff you say, however i don't agree with you here. My answer might be wrong but your justification does not make so much sense. Yes, you can get PVC and...

yep. that's the right answer.

lol... *facepalm*

How can you use similar arguments for others..?

+1

HAHAHHA... It's okay. I am pretty happy with my core as well. Don't think 1 mark would matter that much :)))))

ahhhh... but.. but... *starts sobbing* nah jks Still pretty happy with 19/20

Hahahah thank you! Hopefully it'll turn into a 20 :P I will actually burn if the answer is D, because during the test i was like.. Everyone is gonna put D but maybe they're trying to trick us so i put A considering A could still be produced from plant material. Still happy with 19/20 hurhur :)...

Isn't the highest raw like around 94-5 every year?

i answered it with what would happen if acid/base would be added and how it would affect the equilibrium due to LCP and how a colour change would occur. Hoping for full marks for that section.

Confidence peaking mate ;)

I personally think D is wrong because I have never heard of any cup being made from PURE cellulose. Hence why i chose A.

yeah. the 2.18 or whatever is right. I got that too and there is no way i'm wrong. It's basically just dividing.

i remember solid lead being 0.05 and aq lead being 0.05. can't remember the rest. I think No3 was 0.1, solid silver was 0 and aq silver was 0.1.. not too sure about the last 3 as i can't remember.

It's alright, still happy with 19.

ty.