a) What is dispersion medium of a colloidal solution? .
b) Why particles of a colloidal solution can not be separated by filteration
c)What happens when light passes through a colloidal solution?
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a) answer is dispersed phase
b)they are too small so it can be separated by centrifugation
c) colloidal are big enough to scatter a beam of light passing through it and it make it visible
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(a)The phase that is scattered or present in the form of colloidal particles is called dispersed phase and the medium in which the colloidal particles are dispersed is called the dispersion medium.In a starch solution ,starch represents the dispersed phase while water represents the dispersion medium.
(b)Answer: The size of colloidal particles is less than Inm, while the size of poi present in an ordinary filter paper is larger than Inm. Hence, a colloid solution cannot be separated by filtration.
(c)(i)When a beam of light is passed through a colloidal solution, then light scatter from the particles. This is known as the Tyndall effect. This scattering of light illuminates the path of the beam in the colloidal solution. ... (iii) The colloidal particles are charged either a positive or negative charge.
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