How do you describe the process of recrystallisation to purify a product?

When describing the process of recrystallisation, it is important that every step is mentioned. Firstly, the impure product must be dissolved in a minimum amount of hot solvent. The hot solution should then be filtered to remove any insoluble impurities. The remaining solution should then be allowed to cool and crystallise before filtering away any soluble impurities that remained in the solution. The crystals should then be washed in a small amount of cold solvent and left to dry. It is important that specific terminology is used when describing this process, such as mentioning that a minimum amount of hot solvent is used, as this keeps the yield of pure product as high as possible. It is also important to mention which type of impurities are removed at each stage.

CR
Answered by Chris R. Chemistry tutor

11246 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

How could you obtain a carboxylic acid from oxidation of an alcohol and what type of alcohol would be suitable?


Benzene reacts with Chlorine gas in the presence of iron trichloride to yield hexachlorobenzene. However, when it reacts with fluorine gas, it forms a quinoid product (I would actually draw it for them - no need to know the name). Why the difference?


Describe the Kekule and delocalised model of benzene and explain some of the reasons why the kekule is disproved


A sample of nitrogen gas is heated to 100°C, at a pressure of 10kPa and volume of 0.2m^3. How many moles of gas are present?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences