155
Question
A mixture of naphthalene and benzoic acid can be separated by?
A mixture of naphthalene and benzoic acid can be separated by?
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Solution
The correct option is C Sublimation
Sublimation is the process of transition of a substance from the soild to the gaseous state without passing the liquid state on heating and vice-versa on cooling. To separate mixtures contain a sublimate with volatile component from a non-sublimate impurity, the sublimation process is used. Naphthalene is a volatile compound whereas benzoic acis is non-volatile compond. Therefore, naphthalene sublimates easily because it is made of non- polar molecules that are held together only by Van der Waals intermolecular forces and benzoic acid remains in the mixture.
Hence the correct answer is the option (B)
Sublimation is the process of transition of a substance from the soild to the gaseous state without passing the liquid state on heating and vice-versa on cooling. To separate mixtures contain a sublimate with volatile component from a non-sublimate impurity, the sublimation process is used. Naphthalene is a volatile compound whereas benzoic acis is non-volatile compond. Therefore, naphthalene sublimates easily because it is made of non- polar molecules that are held together only by Van der Waals intermolecular forces and benzoic acid remains in the mixture.
Hence the correct answer is the option (B)
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