Answer the following questions (information on physical properties of the variou

Question

Answer the following questions (information on physical properties of the various compounds is listed on the second page.) If a sample of 50 mL of ethyl acetate was contaminated with 10 mL of ethyl benzene what effect would this have on the boiling point measurement? (circle your answer) higher than pure ethyl acetate lower than pure ethyl acetate the same as pure ethyl acetate Eugenol (an oil that can be extracted from cloves) has a boiling point of 255 degree C at an atmospheric pressure of 760 torr. What will the boiling point of eugenol be if the atmospheric pressure was raised to 780 torr? (circle your answer) higher than 255 degree C lower than 225 degree C exactly 225 degree C A sample of phenol is contaminated with a small amount of benzophenone. The melting point would be.... (circle your answer) higher and the range broader than the pure sample higher and the range more narrow than the pure sample lower and the range broader than the pure sample lower a

Explanation / Answer

Hi

(a) Ethyl benzene is a volatile compound, so on adding it ethyl acetate, the boiling point of ethyl acetate will decrease or the mixture will have lower bp than pure ethyl acetate.

(b) If the atmospheric pressure is increased, the bp of euganol will be higher than 225 C since more vapor pressure is required now.

Thank you

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