Question

Moving forward in different labs we will not be telling you what solution to prime your filter paper with for filtration techniques. Based on what you have learned how will know what solution to use to prime your filter paper? Why can't you just use the same solution to prime no matter the experiment?

Answer 1

Filter paper is actually used in laboratory for the separation purpose.

Filter paper consists very small pores which do not allow to pass solute particle with size more than hundred nano-meter. Therefore, if we have a heterogeneous solution( that is Suspension which consists of large solute particles compare to solvent particles ) then we can use filter paper to separate different component of the solution. But if we have a true solution or colloidal solution then we can not use filter paper to separate the component of solution because in this case filter allow to pass through it due to very small size of solute particles as well as solvent particle.

Suspension is a kind of heterogeneous solution in which solute components are insoluble. So in an experiment if a suspension type solution is formed then we can simply use filter paper to separate them.

Hope you satisfies with the answer.