Question

If a solid dissolves in the liquid, sedimentation and decantation method
cannot be used. Justify.
​

Answer 1

Answer:

if a solid gets dissolved in a liquid then sedimentation and decantation cannot be used because these methods are used to seperate an insoluble solid substance but if we add a little sugar or salt it will dissolve in the liquids it is soluble solid making it hard to seperate.

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Answer 2

Answer:

THE PROCESS OF SEDIMENTAION CANNOT BE USED IF THE SOLID AND THE LIQUID ARE DISSOLVED TOGETHER BECAUSE WHEN A SOLID IS DISSOLVED INTO A LIQUID, THEN THEIR MOLECULES BECOME CONNEECTED AND CANNOT BE SEPERATED BY THE PROCESS OF SEDIMENTATION.

FOR EXAMPLE: IN A WASTEWATER TREATMENT PLANT THE SOLID WASTE IS SEPERATED FROM WATER BY THE PROCESS OF SEDIMENTATION. THEN FURTHER PROCESSES OCCOUR SUCH AS DECANITATION, FILTRATION, CHLORINATION ETC...

IF YOU WANT TO SEPERATE A DISSOLVED SUBSTANCE SUCH AS SUGAR, YOU CAN USE THE METHOD OF DISTILLATION OF WATER..

Explanation:

DISTILLATION MEANS TO BOIL THE WATER, COLLECT THE VAPOUR AND COOL IT DOWN IN ANOTHER CONTAINER. THIS WAY,  WE WILL HAVE TWO CONTAINERS... ONE FOR THE SOLID SUBSTANCE AND ONE FOR WATER..

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