Answer Happy

. You suspect a given substance, unknown X, to be either pure acetaminophen (melting point = 169°C) or pure 1,4-dihydroxybenzene (melting point - 172°C). Subsequently, you perform a mixed melting point analysis by making the following three samples that yield the results below: Unknow X alone yielded a melting range of 162-166°C Unknown X mixed in a 50/50 ratio with acetaminophen yielded a melting range of 165-168°C Unknown X mixed in a 50/50 ratio with 1,4-dihydroxybenzene yielded a melting range of 153-160°C Given the data above, what is the identity of unknown X? . . (Multiple Choice: Only one answer is correct, and only one answer can be selected) 1,4-Dihydroxybenzene Neither acetaminophen or 14-dihydroxybenzene A mbature of acetaminophen and 1,4-dihydroxybenzene. Acetaminophen
2 0/1.75 points Use the dropdown boxes below to provide the general correlation between impurities and melting point. (Fill in the Blank Dropdown: All portions of the dropdown require a selection, and all dropdowns must be correct to receive credit) Adding an impurity to a pure solid will typically Eo raise and narrow the melting range.
4 0/1.75 points What is the predominant reason that 2-napthol has a higher melting point than naphthalene? ОН 2-Naphthol mp = 120-122°C Naphthalene mp = 80-82°C (Multiple Choice: Only one answer is correct, and only one answer can be selected) Surface Area Symmetry Polarity / Hydrogen Bonding