Question

what are the advantages of a derivative being prepared relative to usefulness of chemical tests?

Answer 1

The Advantages are,

1. The derivatives are specific for the particular functional group.
2. Solid derivative prepared is a new compound with different physical and chemical properties than the original.
3. Melting point of unknown derivative can be compared if a table of melting points of derivatives is available to identify the particular compound.
4. It will be easier to study the derivative spectroscopically, e,g., IR studies.
5. Melting point, solubility and IR study can be very much useful in identifying an unknown isomer of a mixture.
6. Solid derivatives can be crystallized and subject to X-ray diffraction studies and confirm the compound exactly.