Qualification > Sciences
question related to free radical mechanism
Deadly_king:
--- Quote from: ashwinkandel on October 04, 2010, 06:48:10 pm ---this is the question from 2010 paper no 12. according to marking scheme the answer of question one which i asked is B and question two is C.
--- End quote ---
Yeah.........the first question is C indeed.
Sorry for the mistake. I misunderstood the question.
When you draw the displayed formula you'll notice that the compound has 4 methyl groups(CH3) and one CH2 part. Free radical substitution mechanism involves the substitution of one H atom by a halogen atom.
So when one H atom is removed from the first CH3, one type of radical is formed and when one H atom is removed from the CH2 part, another type of radical is formed. Then another type is formed when one H atom from any 3 methyl groups on the third carbon atom. Due to orientations any radical formed with the methyl groups will be the same. This makes a total of 3 types.
Reactions :
1. CH3CH2C(CH3)2CH3 + Cl* ---> CH2*CH2C(CH3)2CH3 + HCl
2. CH3CH2C(CH3)2CH3 + Cl* ----> CH3CH*C(CH3)2CH3 + HCl
3. CH3CH2C(CH3)2CH3 + Cl* ---> CH3CH2C(CH3)2CH2* + HCl
By the way I modified my post for the second number ;)
ashwinkandel:
THANKS DEADLY_KING. U HAVE BECOME BY TEACHER. I UNDERSTOOD IT CLEARLY.
Deadly_king:
--- Quote from: ashwinkandel on October 05, 2010, 01:31:30 pm ---THANKS DEADLY_KING. U HAVE BECOME BY TEACHER. I UNDERSTOOD IT CLEARLY.
--- End quote ---
OMG ::)
Me.......teacher ???
You must be joking dude :P
Anyway it's a great pleasure to help you ;)
Vin:
--- Quote from: Deadly_king on October 05, 2010, 02:10:07 pm ---OMG ::)
Me.......teacher ???
You must be joking dude :P
Anyway it's a great pleasure to help you ;)
--- End quote ---
Believe me man, you should seriously opt for the option, as a career. You'll earn gigabucks! :@ At least teachers here do. :P
Deadly_king:
--- Quote from: ~Vin~ on October 05, 2010, 03:06:54 pm ---Believe me man, you should seriously opt for the option, as a career. You'll earn gigabucks! :@ At least teachers here do. :P
--- End quote ---
But what makes you think i'll be successful as a teacher ??? I am only sharing the knowledge that I acquired throughout my studies.
Yeah......I know teachers especially those giving tuitions earn a lot. But really, am not so interested in earning money.
Since i've been a kid I wanted to help those in need.........that's why I badly want to be a medical practitioner. In this way i'll be able to help the poor and even save lives.
I know this may be an ancient reason but I believe in that :)
Anyway thanks for the compliment :)
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