How Soap perform cleansing action?
Soaps and detergents perform the cleaning action because the polar parts of their molecules are water soluble due to hydrogen-bonding and non-polar parts remain outside water.
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Solvent extraction
The removal of a solute from its solution by the addition of a solvent in which the solute is more soluble but which itself is not soluble in solution is called solvent extraction. Ether Extraction: Many organic compounds are produced along with minor products in aqueous solution. Such compounds are shaken with ether taken in…
Crystallization definition
The obtaining of crystals by cooling the hot saturated solution leaving behind mother-liquor is called Crystallization. Basic Principal: The preparation of a chemical compound usually affords a crude product and there is an need to purify it by crystallization from a suitable solvent. The basic principle of crystallization is the fact that the solute should…
Why fish and plants survive underneath water in winter?
The lower density of ice than liquid water at 0°C compels water in ponds and lakes to freeze from surface to the downward direction. Water attains the temperature of 4°C by the fall of temperature in the surrounding. As the outer atmosphere becomes further cold, the water at the surface becomes less dense. This less…
Ion-Dipole Intermolecular Forces
Definition: The forces of attraction between ions and the molecule of the polar solvent are called ion-dipole forces. Explanation: Molecules with ionic bonds are soluble in polar solvents. Solvent molecules break the lattice of ionic compounds and ions are set free. Oppositely charged ions are produced by ionic compounds in polar solvents which surrounded by…
How to find empirical formula | Combustion Analysis
An analytical procedure in which an organic compound is burnt to determine the percentage of each element present in the compound is called combustion analysis. In combustion analysis, weighed amount of an organic compound is burnt in the stream of oxygen in a closed tube known as combustion tube. At the end of this tube…
What are Average Atomic Masses?
Many elements exist as a mixture of their isotopes. The atomic masses of such elements depend upon the number of their isotopes and their natural abundances. This is why their atomic masses are in fraction. This can be explained through following example, EXAMPLE: A sample of neon is found to consist of 20Ne, 21Ne and…
