Question

How is an insoluble solid separated from a liquid in a mixture?

A. It is separated with a Buchner funnel.
B. It cannot be separated.
C. It is separated with a filter.
D. It is separated through evaporation.

Answer 1

C = through filter

Step-by-step explanation:

If the particle size is is greater than 1000 nm then particles can be separated through the filtration. These particles are large enough and can be seen through naked eye.

If the particles size is between 1 - 1000 nm i.e, 0.001- 1μm then it can not be separated through filtration. The pore size of filter paper is 2μm and particles pas through it. However it can be separated through the ultra filtration. In ultra filtration the pore size is reduced by soaking the filter paper in gelatin and then in formaldehyde. This is only in case of when solid colloidal is present, if colloid is liquid , there is no solid particles present and ultra filtration can not be used in this case.