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Question- a student conducted melting point analysis of a recovered solid and found that it started melting at 69 degrees C and finished melting at 78.7 degrees C. 1-) is the substance pure? Explain. 2) Could the substance be benzoic acid? Explain.

Draw the estructures of benzoic acid and hydroxide ion, use electron pushing arrows to show how they react, and draw the structure of the products.

I am in urgent need of solution of above problem with complete explanation

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