in solvent extraction,why repeated extractions using small portions of solvent are more efficient than using a single extraction but larger volume of solvent?
Answers
Answer:
solvent extraction is an equillibrium process . I depends on distribution law . "a solute dissolves itself between two immessible solvents with a constant ratio "
Explanation:
in a single extraction using large amount of solvent , a little amount of solute is extracted out so extraction is less efficient.
while
in repeated extraction using small amount of fresh solvent ,a greater extent to solute is extracted out .
As recovery of solute is more greater, repeated extraction is more efficient.
Answer:
In solvent extraction, repeated extractions using small portions of solvent are more efficient than employing a single extraction but a larger volume of solvent due to the subsequent reason:
The solvent extraction technique relies upon the distribution coefficient.
The ratio of the concentration of a solute dissolved in two immiscible solvents is a constant.
It is called the distribution coefficient (K), which is given by,
K = Concentration of a component within the moving phase/ Concentration of that component within the stationary phase
In repeated extractions, we will get the maximum amount of solute from the solvent.
It is the explanation that repeated extractions using small portions of solvent are more efficient than employing a single extraction but a larger volume of solvent.
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