what is true solution
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True Solution is a homogeneous mixture of two or more substances in which substance dissolved (solute) in solvent has the particle size of less than 10-9 m or 1 nm. Simple solution of sugar in water is an example of true solution. Particles of true solution cannot be filtered through filter paper and are not visible to naked eye. Characterstics of a True Solution:
(i) A true solution (or simply a solution) is a homogeneous mixture. That is in a true solution, the solute and solvent molecules cannot distinguish even under microscope. The composition and properties of a true solution are the same throughout.
(ii) In a true solution, the solute particles are very small, of the order of about 10 -10 m.
(iii) A true solution is clear and transparent.
(iv) A true solution does not scatter light.
(v) The components of a true solution (the solute and the solvent), cannot be separated by filtration. This is because both solute particles and the solvent molecules are very small as compared to the pores in the filter paper.
(vi) The solute particles in a true solution do not settle down.