Search for notes by fellow students, in your own course and all over the country.
Browse our notes for titles which look like what you need, you can preview any of the notes via a sample of the contents. After you're happy these are the notes you're after simply pop them into your shopping cart.
Title: Alkanoic acids
Description: This article on Alkanoic acids describes the preparation of Alkanoic acids. Physical and chemical properties of Alkanoic acids and its uses are also explored.
Description: This article on Alkanoic acids describes the preparation of Alkanoic acids. Physical and chemical properties of Alkanoic acids and its uses are also explored.
Document Preview
Extracts from the notes are below, to see the PDF you'll receive please use the links above
Alkanoic Acids (Carboxylic Acids)
This article on Alkanoic acids describes the preparation of Alkanoic acids
...
Read on…………………
Introduction
Alkanoic acids are a class of alkanes which are special with additional of OOH
...
They have all the characteristics of acids
...
They belong to a homologous series of organic
compounds that contains a carboxyl group (COOH) as a functional group which has a formula
...
It is also
found in nettle leaves and insects stings such as bees and wasps
...
Nomenclature
Alkanoic acids are named by replacing e` in alkanes by the suffix –oic
...
Preparation of ethanoic acid
It is prepared by acidifying potassium manganate(vii) then added ethanol solution
to It then heated
...
CH3CH2OH(aq)MnO42H+CH2COOH (aq) +H2O (1)
...
Acidified orange chromate Vi is used after
heating it turns green
...
Excess oxidizing agent is used to ensure complete oxidation
...
Physical properties
i
...
Their solubility decreases with increase in their molecular mass because of the
decrease in polarity of the acid molecules
iii
...
The alkanoic acids have higher melting point and boiling point than their
corresponding alkanols with the same molecular mass because the alkanoic acids
form more hydrogen bond per molecule than the corresponding alkanol
Chemical properties
i
...
ii
...
iii
...
C2H5COOH(aq) + C2H5OH(aq)
H SO
2 4 (l)C2H5COOC2H5(aq)
Uses of alkanoic acids
i
...
In flavoring of foods e
...
ethanoic acids( vinegar)
iii
...
In preservation of food e
...
benzoic acid
+ H2O(l)
Conclusion
Like other acids, alkanoic acids exhibit similar characteristics as inorganic acids such as
hydrochloric acids, sulphuric acids and nitric acids
...
They are good also in flavoring of food which is good in health
Title: Alkanoic acids
Description: This article on Alkanoic acids describes the preparation of Alkanoic acids. Physical and chemical properties of Alkanoic acids and its uses are also explored.
Description: This article on Alkanoic acids describes the preparation of Alkanoic acids. Physical and chemical properties of Alkanoic acids and its uses are also explored.