Question #746bf

1 Answer
Sep 1, 2017

Answer:

Yes, I can think of two methods.

Explanation:

Method 1 — Based on solubility differences

Ammonium chloride is soluble in water, but naphthalene is not.

So, add water to the mixture, stir well, and then filter the mixture.

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The solid naphthalene will be retained by the filter paper, and you can recover the ammonium chloride by evaporating the water from the filtrate.

Method 2 — Sublimation

Naphthalene undergoes sublimation at approximately 80 °C.

Ammonium chloride also undergoes sublimation, but at a much higher temperature — about 340 °C.

Thus, you can use gentle heating to separate naphthalene from ammonium chloride by sublimation.

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The naphthalene will deposit on the cool walls of the inverted funnel, leaving the ammonium chloride in the evaporating dish.