Why do we crystallise the product?

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In summary, the conversation discusses the reasons for crystallizing products, specifically the use of ethanol and water in the process. The speakers note that crystallization is a common method for purifying compounds, and it can be scaled up for industrial use. They also mention that the choice of solvents for crystallization can vary depending on the specific compound.
  • #1
Arowana
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Why do we crystallise the product??

hehehehhe... why do we crystallise the product??..and why do we ethanol and water to crystallise them??

im a physics student.

but this chem question came across me and i just want to know to make things more clearer..

i know this is an extremely easy question for chem student... and even comonsense can figure it out..:mad: but... some how..i just don't see it.
 
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  • #2
We crystallize things to purify them... and we like the crystals.
 
  • #3
it depends on what your compound is also. recrystallization is more of an art. you have to find the perfect solvent/solvent system that won't dissolve your product at room temperature, but will dissolve it when you heat it.

recrystallization is used to purify your stuff like chemistree said. it is the absolute best way to purify things on an industrial sized scale. many process chemists will completely alter synthetic routes to come up with a way in which products can be recrystallized easily when things must be scaled up from a 500mg scale to a 5000 kg scale.

on a small scale recrystallization is probably the least efficient way to purify something.
 
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  • #4
If you tell us what reaction or compound you're dealing with, someone might be able to help answer your question about why use ethanol and water. Otherwise, without knowing anything more about it, all you will get are the general answers about why crystallization is useful.
 

Related to Why do we crystallise the product?

1. Why is crystallization important in the scientific process?

Crystallization is important in the scientific process because it allows for the purification and isolation of a desired product from a mixture of substances. It also allows for the formation of a solid, well-defined structure that can be studied and analyzed further.

2. How does crystallization occur?

Crystallization occurs when a solution of a substance becomes supersaturated, meaning that the solvent can no longer hold all of the dissolved substance. The excess substance begins to form crystals, which continue to grow until equilibrium is reached.

3. What factors influence the crystallization process?

The rate of cooling, the concentration of the solution, and the presence of impurities are all factors that can influence the crystallization process. Other factors such as stirring, temperature, and the choice of solvent can also impact the final product.

4. Why do we need to control the crystallization process?

Controlling the crystallization process is important in order to obtain a pure and consistent product. By controlling factors such as temperature and concentration, we can ensure that the crystals formed are of the desired size, shape, and purity.

5. What are the advantages of crystallizing a product?

Crystallization has several advantages in the scientific process. It allows for purification and isolation of a desired product, as well as the formation of a well-defined structure for further analysis. Crystals also have a longer shelf life and are easier to handle and transport compared to other forms of a substance.

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