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Chemistry AS level Help!!!

Hey guys! Please explain this to me. I don't get it at all :frown:

2-Methylbuta-1,3-diene, CH2=C(CH3)–CH=CH2, is used as a monomer in the manufacture of
synthetic rubbers.
Which compound would not produce this monomer on treatment with concentrated sulfuric acid
at 170°C?
A (CH3)2C(OH)CH(OH)CH3
B HOCH2CH(CH3)CH2CH2OH
C HOCH2CH(CH3)CH(OH)CH3
D HOCH2C(CH3)(OH)CH2CH3
so I believe this is dehydration of alchohols. so what you wanna do is turn them into alkenes by forming double bonds with the -oh and 1 -h group. Then find out which one doesnt look like the monomer in the example. Thats the answer. (reading the context tricks you a little when it mentions the word monomer but it has nothing to do with polymer etc..). I think the answer would be D.
(edited 6 years ago)
Thanks :smile:
How does A match i dont get that
Since there are two methyl on C no.1 and when it will be dehydrated removing oh means it will form double bond with on of its methyl leaving one methyl as branched. And when dehdration on C no.2 it will form double bomd with the last ch3(methyl) .
This gives the same monomer as asked in the ques thats why option A can't be the ans.

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