How could one rapidly separate red 40 from zinc oxide
Asked by maham237 @ in Chemistry viewed by 346 People
indicate every step.
Answered by maham237 @
Red #40 is soluble in water while zinc oxide is not.
So the easiest way to separate them is as follows:
1- add water to the mixture until red #40 is dissolved in the water
2- filter to separate the zinc oxide
4- heat the solution of red #40 and water until water evaporates and red#40 remains.
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