Phenol is considerably stronger acid than cyclohexanol; the reason has to be proposed. Concept Introduction: Base and its conjugate Acid: A Base is a species that can gain a proton. When a base gains a proton ( H + ) , it forms its conjugate acid. In order to gain a proton, a base must possess lone pair that it can use to form a new bond with the proton. Neutral base forms a positively charged conjugate acid, whereas a positively charged base forms a neutral conjugate acid. Electron delocalization stabilizes base: If a base has delocalized electrons, then the negative charge that results when the base’s conjugate acid loses a proton will belong to one atom. If a base has delocalized electrons, then the negative charge that results when the base’s conjugate acid loses a proton will be shared by two or more atoms. A base with delocalized electron is more stable than a similar base with localized electrons. Effect of hybridization on Acidity: The electronegativity of an atom depends on its hybridization. The stronger acid will have its proton attached to the more electronegative atom.

Question

3. Assign absolute configuration (Rors) to each chirality center. a. H Nitz C. он b. 0 H-C. C H 7 C. ་-4 917-417 refs H 1つ ८ ડુ d. Но f. -2- 01 Ho -OH 2HN

Answer 1

Question

Chapter 10, Problem 10.49P

Interpretation Introduction

Interpretation:

Phenol is considerably stronger acid than cyclohexanol; the reason has to be proposed.

Concept Introduction:

Base and its conjugate Acid: A Base is a species that can gain a proton. When a base gains a proton (H+), it forms its conjugate acid. In order to gain a proton, a base must possess lone pair that it can use to form a new bond with the proton. Neutral base forms a positively charged conjugate acid, whereas a positively charged base forms a neutral conjugate acid.

Electron delocalization stabilizes base: If a base has delocalized electrons, then the negative charge that results when the base’s conjugate acid loses a proton will belong to one atom. If a base has delocalized electrons, then the negative charge that results when the base’s conjugate acid loses a proton will be shared by two or more atoms. A base with delocalized electron is more stable than a similar base with localized electrons.

Effect of hybridization on Acidity: The electronegativity of an atom depends on its hybridization.

The stronger acid will have its proton attached to the more electronegative atom.

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