Recrystallization is the process in which a solid is dissolved in a suitable solvent, usually at elevated temperatures. as the solution is heated, it becomes saturated, and the unsaturated solid begins to reform crystals. recrystallization is a common way to purify a solid. the formation of the crystalline structure tends to dissolve impurities when re-grown slowly from a unsaturated solution, resulting in crystals with fewer impurities than the original crystals.

Question

19-05-2018
Chemistry

Answered

Recrystallization is the process in which a solid is dissolved in a suitable solvent, usually at elevated temperatures. as the solution is heated, it becomes saturated, and the unsaturated solid begins to reform crystals. recrystallization is a common way to purify a solid. the formation of the crystalline structure tends to dissolve impurities when re-grown slowly from a unsaturated solution, resulting in crystals with fewer impurities than the original crystals.

Answer :

Other Questions

Jamal ran 8 kilometers, sprinted 500 meters, and climbed bleachers for a distance of 2 kilometers during track practice. How many meters did he travel during pr

Edufirst Edufirst · Answer 1 · 2018-05-29T11:06:39-04:00

This was a completing question and what is shown is the answer (with a few errors).

The question for completion is:

Recrystallization is the process in which a solid is dissolved in a _______ solvent, usually at ___________ temperatures. as the solution ___________, it becomes ____________, and the ____________ solid begins to reform crystals. recrystallization is a common way to _________ a solid. the formation of the crystalline structure tends to ___________ impurities when re-grown slowly from a ______________ solution, resulting in crystals with ________________ impurities than the original crystals.

And you are also given this bank of words from which to select the right words:

[ lack, is heated, elevated, lower, suitable, dissolve, excess, fewer, reject, more, cools, saturated, purify, unsaturated ]

Herewith, I show you the right answer:

Recrystallization is the process in which a solid is dissolved in a (suitable) solvent, usually at (elevated) temperatures. as the solution (is heated), it becomes (saturated), and the (excess) solid begins to reform crystals. Recrystallization is a common way to (purify) a solid. The formation of the crystalline structure tends to (reject) impurities when re-grown slowly from a (saturated) solution, resulting in crystals with (fewer) impurities than the original crystals.

As you can see, I corrected some words from the statement posted because they did not fit with the recrystalization process.

Recristalization is indeed a technique to purify solids by dissolving them in an adequate solvent (remember polar dissolve polar and non-polar dissolve non-polar).

Then, you heat the solution and as the solvent evaporates the solutions gets more concentrated, when it is saturated the solute starst to precipitate in form of crystals which have fewer impurities.