Question

Why the Naphtalene balls disappear with time without leaving any solid Residue ?​

Answer 1

• Naphthalene undergoes sublimation easily i.e., the change of state of naphthalene from solid to gas without the intervention of the liquid state. Thus, naphthalene balls keep on forming naphthalene vapours which disappear into the air with time without leaving any solid.

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Answer 2

Explanation:

Naphthalene is volatile in nature (easily converts into gas), which allows the balls to disappear with time, and has a sublimation property, I. e, It directly changes it's state from solid to gas, thereby leaving no residue after a certain period of time.

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