The specie that develops strongest hydrogen bonding with water:
Correct answer: A. HCOOH
- A. HCOOH
- B. CH3COOH
- C. CH3CH2COOH
- D. CICH2COOH
Explanation
Hydrogen bonding occurs when a hydrogen atom is bonded to a highly electronegative atom (such as oxygen or nitrogen) and is attracted to another electronegative atom in a neighboring molecule. In the case of methanoic acid, it has a highly polarized carboxyl group (-COOH) containing a hydrogen atom bonded to theoxygen atom. This hydrogen atom is available for hydrogen bonding with water molecules.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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