The identity of the unknown compound is Urea from the Table# given. The reason for this identification will further be discussed below.
What is melting point?
Melting point can be defined as the point at which a substance changes from a solid phase or state to a liquid state
When two substances of different melting points are added together, the total melting point obtained is usually depressed.
From the table,
- When urea and benzoic acid is added the melting point range becomes = 117-120
- When urea and Cinnamic acid is added the melting point range becomes= 100-125, and both of which is lower than the individual melting points.
Therefore, the identity of the unknown compound is Urea from the Table# given.
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