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Chemistry A level help polymers

Hi, I am stuck on a couple of questions in this paper. On question 2 d) I am struggling to work out how they get that product. Also on questions 3d)ii and iii, when it asks about it's reaction with NaOH in ii, is this essentially the structure more basic that it's isoelectric point? Wouldn't the o- in the molecule react with the na+? In part iii is it asking for the structure when it is more acidic that its isoelectric point? Also, I am stuck on part iv too - how do you work this out? Many thanks. https://pmt.physicsandmathstutor.com/download/Chemistry/A-level/Topic-Qs/AQA/Organic-II/3.12-Polymers/Set-F/Condensation%20Polymers%202%20QP.pdf
@ChemistryWebsite hi can you please help me with this? thanks
How about one question at a time 😁
Original post by ChemistryWebsite
How about one question at a time 😁

They should really be giving their own thoughts, instead of tagging other people and expecting them to give the answers to that many questions.
the reason I tagged them is because no one ever replies. And I have given my own thoughts.
Original post by ChemistryWebsite
How about one question at a time 😁

Cheers for the informative response mate! keep up the good work :biggrin:

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