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Question:

Identify the binary mixture(s) that can be separated into individual compounds by differential extraction.

C6H5OHandC6H5COOH

C6H5CH2OHandC6H5CH2COOH

C6H5CH2OHandC6H5OH

C6H5COOHandC6H5CH2OH

Solution:

C6H5COOH is soluble in NaOH but C6H5CH2OH is not soluble in NaOH, thus can get separated into individual compounds. Separation is possible by both NaHCO3 and NaOH in this case.