Qualification > Sciences
ALL CIE CHEMISTRY DOUBTS HERE !!
elemis:
I know the carbon with the red square is DEFINITELY chiral. Why is the one with the PINK square NOT chiral ?
elemis:
--- Quote from: Amelia on February 07, 2011, 08:23:18 pm --- ^ There are three methyl groups in 2,2dimethylbutane. Available for Chlorine radicals to attack on. So free radicals are formed from each Ch3's.
--- End quote ---
I dont understand. Are you talking about the right question ?
ashish:
--- Quote from: Ari Ben Canaan on February 06, 2011, 03:31:43 pm ---In the first one, why isnt the answer D ?
Reduction is the GAIN of Hydrogen, right ? In step 2 a massive molecule is added that has several hydrogens. Isnt this reduction ?
Can you explain why the answer is C ?
In the second one, I have marked the chiral centre. Is it correct ?
--- End quote ---
it is not reduction as we are nor adding hydrogen directly to the molecule!
the alcohol is acidic (releases H+) creating CH3CH2O- which then attack the CH3C+HO- creating an nucleophile which is then attacked by the proton
elemis:
--- Quote from: ashish on February 08, 2011, 02:57:25 pm ---it is not reduction as we are nor adding hydrogen directly to the molecule!
the alcohol is acidic (releases H+) creating CH3CH2O- which then attack the CH3C+HO- creating an nucleophile which is then attacked by the proton
--- End quote ---
Thanks.
Could you answer my other questions, please ?
EMO123:
Best of luck Twinkle Charms for your chem exams
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