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Criteria of purity of organic compounds

6 years ago


Answers : (1)


After purification, the test of purity of an organic compound is the nest important step. A pure organic compound possesses characteristic physical properties such as refractive index, specific gravity, boiling point, crystalline structure and melting point. If a purified sample shows the same properties that the pure substance is known to possess, it may be considered as pure and no further purification is required. However for practical purpose in laboratory only melting point and boiling point are used as criteria for purity.

A pure organic solid has a definite and sharp (sudden, rapid and complete) melting point, while an impure substance has a lower and indefinite melting point.

The melting point of a solid may be defined as the temperature at which the solid and liquid states of the compound are in equilibrium with each other at an external pressure of l atmosphere.

6 years ago

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Hcl+NaOH Is Converted into products NaCl+H2O.
LALAM RAJESH 2 months ago
The reaction is HCl+NaOH==NaCl+H 2 O
RAKESH CHINDAM 2 months ago
HCl+NaOH--------->NaCl+H 2 O
Shantanu Singh 2 months ago
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1S 2 2S 2 is the electronic configuration of the berillium compound it is the alkali earth metal berillium compounds are covalent compounds
1s2 2s2
SHANMUKESHWAR 2 months ago
Solid A is a very hard electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it?
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KUNCHAM SAMPATH 3 months ago
Given solid ‘A’ is a covalent solid, such as diamond.
RAKESH CHINDAM 3 months ago
Given solid ‘A’ is a covalent solid, such as diamond
L GOUSE BASHA 3 months ago
N react with O2 what is form?
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RAKESH CHINDAM 2 months ago
srujanyadav 3 months ago
forms NO2
raju p 3 months ago
what is rate of reaction?
The reaction rate ( rate of reaction ) or speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow a reaction takes place.
SHANMUKESHWAR 2 months ago
The Reaction Rate for a given chemical reaction is the measure of the change in concentration of the reactants or the change in concentration of the products per unit time.
SAI SARDAR 2 months ago
IF YOU LIKE MY ANSWER PLEASE APPROVE THIS ONE AND SAVE ME.PLEASE...................................................
SAI SARDAR 2 months ago
Why graphite is a conductor and used as a lubricant?
SINCE EACH carbon atom contain unpaired electrons, so it can act as good conducter of electricity. Graphite has hexagonal layerd structure. Graphite layers are held togeather by weak...
graphite is a conductor and used as a lubricant, because in
SAI SARDAR 2 months ago
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