After Carrying out the Aspirin synthesis experiment Suggest

After Carrying out the Aspirin synthesis experiment, Suggest an experiment or technique based on what you have learned in the last few weeks to confirm the preparation of Aspirin. (Give full details) Hint: You are provided with pure sample of Aspirin  

Solution

Aspirin: it is synthesized by the reaction between salicylic acid and acetic anhydride, the compound formed named as acetyl salycylic acid.

Melting Point Charecterization:

caluculation:

the observed melting point range did include the expected melting point. the expected melting point also caluculated from an average was 134^oC . the four sets of melting point data are summerized in the following table.

the results of the first sample ws neglected because that was the first melting point trial performed. the results for the fourth trial were very strange in that the temperature dropped after melting. if only 2 and 3 trails are used then the average range should be 131.5 - 135^oC, which would be very precise results.

consequently , the melting range indicates that the synthesized aspirin pure.