المساعد الشخصي الرقمي

مشاهدة النسخة كاملة : سؤال في chemistry ..(ضروري )


حيرانة
2011- 4- 29, 03:52 PM
بسم الله الرحمن الرحيم
ممكن احد يشرح لي كيف اختار more acidic من بين عدة مركبات في organic chemistry ?
مثلا
Q
من هو اكثر ACIDIC
1-METHANOL OR CHLOROMETHANO ?
2-METHYLE PHENOL OR CHLOROPHENOL ?
AND WHY ?
:Cry111:

Dr.Muhammed
2011- 4- 29, 08:50 PM
أختي شوفي :

الفينول أو الغول الأروماتي ( حلقة البنزين المرتبط بها OH ) أعلى حمضية من الغول الاليفاتي

وذلك بسبب الرنين ( Resonance ) الموجود في الفينول وغير موجود في الغول الاليفاتي

ثانيا تزداد الحمضية كلما زادت السالبية الكهربية للعنصر المرتبط بالغول

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لأن الفلور أعلى سالبية من الكلور والبروم وأما الكلور فهو أعلى من البروم وهكذا

أتمنى انو الشرح كافي وأي خدمة ان شاء الله تلقيني موجود :119:

زهرة التوليب
2011- 4- 29, 11:19 PM
شكرا على الشرح دكتور محمد :119:

Dr.Muhammed
2011- 4- 29, 11:49 PM
العفو خيتوو ولو حاضرين لكم :(204):

حيرانة
2011- 4- 30, 12:44 AM
شكرا جزيلا والله يعطيك العافية
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