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JmCullen said:it's 6. but can i know why?
I did 4+7 = 11/2 5.5.. But the answer is 6, they expect you to know that? Question please..
HyDraZin3 said:See what i think is, if H and OH will go from both sides, the polymer should be :- -OC-C6H4-COOCH2CH2-0-
My polymer is correct, but in the mark scheme they are adding one more O in the start :- -OOC-C6H4-COOCH2CH2-0- and i dont understand why there is this addition :unknown:
You have taken too much OH off.. OH only comes off one end, the H just comes off the other end as there is a continuation..
It may be easier if you draw the structural formula, I find it easier that way. I'll draw it on paint.