Q 2.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example
Q 2.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example
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1 Answer
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A solution is a homogeneous mixture of two or more than two substances on molecular level whose composition can vary within certain limits.
The part or component of the mixture present in a lesser amount is called
the SOLUTE and the one present in larger amount is called the SOLVENT. For eg- small amount of salt [solute] dissolved in water [solvent].
There are nine types of solutions formed. They are:
Sr.No.
State of solute
State of solvent
Examples
1
GAS
GAS
Air
2
GAS
LIQUID
Oxygen in water, carbonated water
3
SOLID
GAS
Smoke particles in air, dust particles in air
4
LIQUID
GAS
Mist
5
LIQUID
LIQUID
Alcohol in water
6
LIQUID
SOLID
Mercury in silver
7
GAS
SOLID
Adsorption of hydrogen over palladium or platinum
8
SOLID
LIQUID
Sugar in water
9
SOLID
SOLID
Carbon in Iron(steel), Alloy
Out of these nine types solution, solid in liquid, liquid in liquid & gas in liquid are very common. When the components of the solution are mixed, the resulting solution may exist in any of the three possible states of matter that is solid, liquid or gaseous.
They are:
(1) Gaseous solution: In such solutions solvent is Since the solvent is gas,the solute can be solid, liquid or gas. For example, a mixture of oxygen and nitrogen gas is a gaseous solution.
(2) Liquid solution: In such type of solutions liquid acts as the solvent. The solute in these solutions may be gas, liquid, or solid.
(3) Solid solutions: As the name suggests, in such solutions solid acts as the solvent. The solute in these solutions may be a gas, liquid or solid. For example, a solution of copper in gold is a solid solution.
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- Important Questions for Solution
If a solution containing more than 0.9% salt is used, and we place blood cells in it, the water will flow out of the cells, and they will shrink. Such a solution is a hypertonic solution.
Similarly, if a solution contains less than 0.9% salt, the water will flow into the cells, and they will enlarge.
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