What would happen to the melting point in this problem?

User Generated

tntnaxc03

Science

Description

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,

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Explanation & Answer

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

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