ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)
ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)
4th Edition
ISBN: 9781119659587
Author: Klein
Publisher: WILEY
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Chapter 25, Problem 55PP

(a)

Interpretation Introduction

Interpretation:

The amino acids required for obtaining the given aldehyde and the compound responsible for purple coloration need to be identified.

Concept introduction:

Ninhydrin react with primary amines to give a purple colored product.  This is a qualitative and quantitative test.  The aldehyde is obtained as by-product.  The general scheme can be shown as,

ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL), Chapter 25, Problem 55PP , additional homework tip  1

To draw : To identify the amino acids required to form the given aldehydes

(b)

Interpretation Introduction

Interpretation:

The amino acids required for obtaining the given aldehyde and the compound responsible for purple coloration need to be identified.

Concept introduction:

Ninhydrin react with primary amines to give a purple colored product.  This is a qualitative and quantitative test.  The aldehyde is obtained as by-product.  The general scheme can be shown as,

ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL), Chapter 25, Problem 55PP , additional homework tip  2

To draw : To identify the structure of  compound responsible for purple color.

(c)

Interpretation Introduction

Interpretation:

The amino acids required for obtaining the given aldehyde and the compound responsible for purple coloration need to be identified.

Concept introduction:

Ninhydrin react with primary amines to give a purple colored product.  This is a qualitative and quantitative test.  The aldehyde is obtained as by-product.  The purple coloration is seen due to compound that has more conjugated systems.  The more conjugation is present in the system the more colored the compound will be.  The general scheme can be shown as,

ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL), Chapter 25, Problem 55PP , additional homework tip  3

To draw : To identify the origin of the purple color.

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Please help, this is all the calculations i got!!! I will rate!!!Approx mass of KMnO in vial: 3.464 4 Moss of beaker 3×~0. z Nax200: = 29.9219 Massof weacerv after remosimgain N2C2O4. Need to fill in all the missing blanks. ง ง Approx mass of KMnO4 in vials 3.464 Mass of beaker + 3x ~0-304: 29.9219 2~0.20 Miss of beaker + 2x- 29.7239 Mass of beaker + 1x~0.2g Naz (204 29-5249 Mass of beaver after removing as qa Na₂ C₂O T1 T2 T3 Final Buiet reading Initial butet reading (int)) Hass of NaOr used for Titration -reading (mL) calculation Results: 8.5ml 17mL 27.4mL Oml Om Oml T1 T2 T3 Moles of No CO Moles of KMO used LOF KM. O used Molenty of KMNO Averagem Of KMOWL

Chapter 25 Solutions

ORGANIC CHEMISTRY-STUD.SOLNS.MAN+SG(LL)

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