Question

Give reason for the following observation.
Naphthalene balls disappear with time without leaving any
solid.

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Answer 1

HEYA ❤️

NAPTHALENE BALLS DISAPPEARED WITH TIME WITHOUT LEAVING ANY SOLID BECAUSE IT IS A SUBLIMATING SUBSTANCE. ( SUBLIMATING SUBSTANCE ARE THOSE SUBSTANCES WHICH DIRECTLY CHANGE FROM SOLID TO GASEOUS STATE WITHOUT GOING THROUGH LIQUID STATE ).

THEREFORE, IT DIRECTLY CHANGES INTO GAS HENCE, THERE IS NOT ANY SOLID IS LEFT.

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Answer 2

Answer:

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.

Explanation:

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