The maximum number of hydrogen bonds that can form between an ethanal molecule and other ethanal molecules has to be determined. Concept Introduction: Aldehyde is an organic compound that has carbonyl carbon bonded to a hydrogen atom as its functional group . Carbonyl group is the nonpolar group. Due to the lone pair of electrons that is present on the oxygen in carbonyl group, hydrogen bonding is possible with water molecules and not with aldehyde molecules. Hydrogen bonds are weak force of attraction.

Question

Please draw the structure in the box that is consistent with all the spectral data and alphabetically label all of the equivalent protons in the structure (Ha, Hb, Hc....) in order to assign all the proton NMR peaks. The integrations are computer generated and approximate the number of equivalent protons. Molecular formula: C13H1802 14 13 12 11 10 11 (ppm) Structure with assigned H peaks 2.08 3.13

Answer 1

Question

Chapter 4, Problem 4.69EP

(a)

Interpretation Introduction

Interpretation:

The maximum number of hydrogen bonds that can form between an ethanal molecule and other ethanal molecules has to be determined.

Concept Introduction:

Aldehyde is an organic compound that has carbonyl carbon bonded to a hydrogen atom as its functional group. Carbonyl group is the nonpolar group.

Due to the lone pair of electrons that is present on the oxygen in carbonyl group, hydrogen bonding is possible with water molecules and not with aldehyde molecules. Hydrogen bonds are weak force of attraction.

(b)

Interpretation Introduction

Interpretation:

The maximum number of hydrogen bonds that can form between an ethanal molecule and water molecules has to be determined.

Concept Introduction:

Aldehyde is an organic compound that has carbonyl carbon bonded to a hydrogen atom as its functional group. Carbonyl group is the nonpolar group.

Due to the lone pair of electrons that is present on the oxygen in carbonyl group, hydrogen bonding is possible with water molecules and not with aldehyde molecules. Hydrogen bonds are weak force of attraction.

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