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Suppose that two organic compounds, M and N, have about the same melting point and that...

Suppose that two organic compounds, M and N, have about the same melting point and that you are given an unknown organic compound, X, which also has the same melting point and is suspected of being identical with either M or N. Describe a procedure for identifying X and state the results you would obtain in each of the following situations: a) X is identical with M. b) X is identical with N. c) X is not identical with either M or N.

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Answer #1

Procedure:
1. Note the melting point of both M and N
2. Mix small amount of X in M and note the melting point
3. Mix small amount of X in N and note the melting point

A)
Melting point of mixture containing X and M will be same as M
Melting point of mixture containing X and N will be lower than N

B)
Melting point of mixture containing X and N will be same as N
Melting point of mixture containing X and M will be lower than M

C)
Melting point of mixture containing X and M will be lower than M
Melting point of mixture containing X and N will be lower than N

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