Organic Chemistry Answers

How does isotopes labeling helps in determining the mechanism of a reaction

Rank the following compounds in order of increasing reactivity in electrophilic

aromatic substitution (from least to most reactive). Briefly justify your ranking.

NHCCH3 CNH2 NH2

A B C


Draw a stepwise mechanism for the following reaction and briefly explain why

this reaction will not take place in the presence of a base:



Propose a mechanism for the reaction of acetic acid with methanol in acidic

medium.

What is Organohalogen compound?

Which of the following show positive test with Fehling solution why? Explain.

1) Farnesal

2) Pulegone

3) Citronellal

4) Beta-Ionone

What is the effect of low molecular weight and high molecular weight polymers on glass transition temperature? Give answer in detail.

What is the effect of low molecular weight and high molecular weight polymers on tensile strength? Give answer in detail.

What is the effect of low molecular weight and high molecular weight polymers on crystallinity? Give answer in detail.

Outline a detailed mechanism for the following reaction:





C C HC

CH3

CH3

CH3

(1) NaNH2

(2) CH3CH2CH2COH

(3) H3O

Write the complete stepwise mechanism for the acid-catalyzed hydrolysis of the

following amide to yield a carboxylic acid. Give IUPAC name for the acid

formed.

OH

O

NH2

OH

O

OH

H3O+

+ NH4

Aluminum bromide is produced by the reaction of aluminum metal with bromine liquid, according to the following balanced equation:


2 Al(s) + 3 Br2(l) → 2 AlBr3(aq)


If 10.0 grams of Al is added to 10.0 g of Br2, assuming the reaction has yielded 100% yield, calculate the mass (in grams) of AlBr3 produced in this reaction