Which postulate was disproved by Wohler ? Explain with example.

1.	Which postulate was disproved by Wohler ? Explain with example.
Answer» Solution :Carbon atom possesses characteristic features of tetravalency and catenation, and due to this it FORMS a large number of compounds. Among these, many compounds have the same non-carbon atom or group of atoms attached to DIFFERENT carbon chains. These compounds were initially extracted from natural substances. It was believed that organic compounds could only be formed within a living system, that is, it was POSTULATED that .vital force. was necessary for their synthesis. German scientist, Friedrich Wohler disproved this in 1826. EXAMPLE : He prepared organic compound urea by heating inorganic compound ammonium cyanate. `underset("cyanate")underset("Ammonium")(overset(+)(N)H_(4)bar(O)NC)overset(Delta)toNH_(2)-underset("Urea")underset(O)underset(\|\|)(C)-NH_(2)`

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