1.

Phenol reacted with nitric acid which gives two products. Which is the best method to separate the products?(a) Steam distillation(b) Fractional crystallization(c) Sublimation(d) Chromatographic separation

Answer»

(a) Steam distillation

O-nitrophenol and p-nitro-phenol can be separated by steam distillation. Ortho nitro-phenol is steam volatile (intra molecular hydrogen bonding) whereas p-nitro phenol is least steam volatile when compared to the ortho nitro-phenol due to inter molecular hydrogen bonding.



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