Sometimes the melting point is higher than the literature value, meaning a- The

Question

Sometimes the melting point is higher than the literature value, meaning

a- The apparatus is not calibrated properly

b- There is an impurity

c- The apparatus was heating too fast

d- There is solvent trapped in the crystals.

Has the boiling point of the organic layer any effect in the extraction process?

No as far as it is not larger than the boiling point of water

Yes, it does limit the solubility of the compound in water

Not directly, but it can affect the following steps

Yes, it does improve the extraction

Explanation / Answer

1) Sometimes the melting point is higher than the literature value, meaning

Ans = b- There is an impurity

Due to the presence of impurity, more heat is required than the normal value.

Hence, the compound show melting point higher than the literature value.

2)

Has the boiling point of the organic layer any effect in the extraction process?

Ans = No as far as it is not larger than the boiling point of water

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