Mixtures, separation of mixtures, distillation?

Question

What is the difference between sieving and filtering
and another question what is DISTILLATION?
if you have a complete answer i will vote you as a best answer so answer NOW!!!!

Answer 1

The difference between sieving and filtering is often minor. Sieving is a more specific version of filtering. Filtering means certain particles/chemicals are allowed to past, while others are blocked. Sieving indicates that particles are separated based on size -- thus a more specific version. There are other filtration methods beside sieving. For example, you can filter water based on electric field, and that will not be sieving.



Distillation is a method to purify based on volatility. Take distilled water as an example. When you boil salt water, only water liquid is transformed into water vapor. Salt is left behind. As such, if you can collect and cool down the water vapor, the resulting water is more pure because salt is removed. This purification is distillation.

Answer 2

Filteration and sieving are quite different though both are methods employed for separation.

Filteration is done when the separation has to be done involving solid and liquid components. One of the component has to be liquid and the other a solid. The solid being bigger in particle size will not be able to pass through the pores of the filter. Thus liquid will be able to pass through filter and will be a part of filterate. The solid will be retained on the filter paper.



Sieving involves separation when all the components are solids but their the particle sizes are different. It is also possible to separate the same compound (or substance) on the bases of particle size. For example, in sugar industry sugar crystals are separated by sieving to get different grades of sugar depending upon the size of crystals. It is also possible to have two compounds of different paricle size and these can be separated by sieving.

Distillatin helps to separate compounds on the basis of diference of boiing points of the different components.

In distillation a liquid is vaporized to vapours and is condensed back to liquid and is collected at a place different from where it was evaporated to get distilate. A volatile compound can be separated from a nonvolatile compound or volatile cpmpounds can also be separated if their boiling points are quite different.

Answer 3

a) There is no difference between sieving and filtering. I would say at most filtering is a more thorough process.



b) Distillation is the separation of compounds in a mixture based on their differences in boiling points. A typical distillation apparatus is designed to capture and condense the more volatile (lower boiling point) evaporated compound which has been separated from the less volatile (higher boiling point) compound.