Explain the following giving examples.
(a) saturated solution
(b) pure substance
(c) colloid
(d) suspension
Answers
Answer:
a)A saturated solution is a chemical solution containing the maximum concentration of a solute dissolved in the solvent. The additional solute will not dissolve in a saturated solution.
b)A chemical substance is a form of matter having constant chemical composition and characteristic properties. A chemical substance cannot be separated into its constituent elements by physical separation methods, i.e., without breaking chemical bonds.
ç)A colloid is a substance microscopically dispersed evenly throughout another substance. The dispersed-phase particles have a diameter between about 5 and 200 nanometers. Examples: Milk is an emulsion, which is a colloid in which both parties are liquids.
d)suspension is a heterogeneous mixture in which the solute particles do not dissolve, but get suspended throughout the bulk of the solvent, left floating around freely in the medium.
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Answer :-
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Saturated Solution :
The Solution in which no more solute can be dissolved in the same amount of solvent at a particular temperature is called saturated solution.
ᴇ.ɢ., ɪғ ɪғ ᴡᴇ ᴅɪssᴏʟᴠᴇ 21 ɢʀᴀᴍ ᴏғ ᴋɴᴏ₃ ᴀᴛ 283 ᴋ, ᴡᴇ ᴡɪʟʟ ɢᴇᴛ sᴀᴛᴜʀᴀᴛᴇᴅ sᴏʟᴜᴛɪᴏɴ.
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Pure Substance :
The substance which always has the same characteristic at a given temperature and pressure is called Pure Substance.
ᴇ.ɢ., ᴅɪsᴛɪʟʟᴇᴅ ᴡᴀᴛᴇʀ.
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Colloid :
Colloid consists of particles bigger than that of solution, smaller than that of suspension. It appears to be homogeneous but actually it is heterogeneous.
ᴇ.ɢ., ᴍɪʟᴋ.
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Suspension :
It consist of particles which are larger in size and are visible with naked eyes. It is heterogeneous.
ᴇ.ɢ., ᴄʜᴀʟᴋ ᴘᴏᴡᴅᴇʀ ɪɴ ᴡᴀᴛᴇʀ ɪs ᴀ sᴜsᴘᴇɴsɪᴏɴ.
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