How do you know the the first molecule is the acid and the second one is the bas
ID: 888612 • Letter: H
Question
How do you know the the first molecule is the acid and the second one is the base? I'm confused..Does the negative charge on the second one mean it's a Base and the double bond on the first one mean it's an Acid? HELPPP!
Correct Response: Be sure to answer all parts. Draw the products of the following proton transfer reaction. Show all unshared electron pairs in your structures. Label the acid and base in the starting materials, and place the conjugate acid and conjugate base products in the appropriate boxes. CH3O CHCH2 acid base | 0 HOCH3 H2 view structure view structure conjugate base conjugate acidExplanation / Answer
In the above structure, the bond between O-H are polarised. what that means is the shared pair of electrons is shifted more towards the more electronegative O in the the bond giving a partial positive charge to H and a partial -ve charge to O. After the first molecule structure looses a hydrogen, the -ve charge on oxygen is easily stabilized by resonance with the C=O group in the moelcule [conjugate base of acid]. So it tends to loose H easily and act as an acid. In the second, the -vely charged O is all set to donate its lone pair to a hydrogen, thus acting as a base.
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