What would happen to the melting point in this problem?

Chemistry
Tutor: None Selected Time limit: 1 Day

You have an unknown sample that has a melting range of 51-53°C.

The two possibilities for this unknown are maleic anhydride (mp: 52-54°C) and 4-nitrotoluene (mp: 54-56°C).

If the unknown is believed to be maleic anhydride, what would happen to the melting point if the unknown were mixed with :

i) an equal quantity of pure maleic anhydride
ii) an equal quantity of pure 4-nitrotoluene,

Oct 3rd, 2015

Thank you for the opportunity to help you with your question!

i) an equal quantity of pure maleic anhydride 

The melting point would remain the same.

ii) an equal quantity of pure 4-nitrotoluene,

The melting point of maleic anydride would reduce. Impurities lower the melting point

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 15th, 2015

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Oct 3rd, 2015
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Oct 3rd, 2015
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