You are provided with a mixture of naphthalene and sodium chloride by your teacher suggest an activity to separate them with well labelled diagram
Answers
labelled diagram is also attached
Because napthalene can change its state to vapour without changing in liquid and vice-varsa. On the other hand sodium chloride cannot change the states like that.
So, mixture of naphthalene and sodium chloride can be separated by the process of sublimation.
what we need?
- spatula
- China dish
- funnel
- gas burner
- stand for
- cotton cloth
Steps:
- Take the mixture in a china dish and put it on the tripod.
- Cover the mixture with a funnel by putting it inverted on the china dish and close the tip of funnel using cotton.
- Now start the gas burner as in diagram. After 30 to 60 second when vapour starts in the funnel stop the burner.
- when the apparatus become cool scratch out the naphthalene from inner wall of the funnel and take out th sodium chloride from china dish.
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For the answer plz see the attachment below
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