Pure Naphthalene has a literature m.p. of 80-81 °C. Which of the following m.p. data would not be an acceptable observed m.p. for pure Naphthalene? O 79-80°C 81-82 C O 80.5-81.5°C 79-85°C
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- What structural feature(s) do ethanol and 1-decanol have in common? State a reason for the observed solubility patterns of ethanol and 1-decanol in water and hexane. What structural feature(s) do toluene and naphthalene have in common? You can goggle the chemical structure. State a reason for the observed solubility patterns of toluene and naphthalene in water and hexane.Melting point: 98-105 Percent yield: 60% did you successfully make pure product? Explain.why is distillation an ideal choice to purify cyclohexene from cyclohexanol instead of other possible purification methods (specific examples)
- Assuming that 50% of the heat is useful, how many kg of water at 15.0 oC can be heated to 95.0 oC by burning 200L of methane, CH4, measured at STP? Heat of combustion of methane is 211 kcalmol-1. Specific heat capacity of water is 1.00 kcal kg-1K-1.Naphthalene, C10H8 is insoluble in water but sublimes easily when heated. How could you separate a mixture of naphthalene and NaCl? Suggest two different methods. asapDiethyl ether and butan-1-ol are isomers, and they have similar solubilities in water. Their boiling points are very different, however. Explain why these two compounds have similar solubility properties but dramatically different boiling points. CH3CH2¬O¬CH2CH3 CH3CH2CH2CH2¬OH diethyl ether, bp 35 °C butan-1-ol, bp 118 °C 8.4 mL dissolves in 100 mL H2O 9.1 mL dissolves in 100 mL H2O
- Molecule Type Boiling point (°C) CH3CH2CH3 Alkane -42 CH3CHO Aldehyde +21 CH3CH2OH Alcohol +78 i. Why is the boiling point of the aldehyde greater than that of the alkane?ii. Why is the boiling point of alcohol the highest?iii. Explain why the solubility of aldehydes and alcohols falls as the molecules get bigger.An organic chemistry laboratory Extraction; the extraction of crude naphtalene- benzoic acid mixture. Naphthalene is a suspect carcinogen and is toxic to aquatic life. Find an alternative pair of molecules that adhere better to the principles of green chemistry and can be separated by extraction using green' solvents. (kindly answer fully)A bloodhound, with an acute sense of smell, sits at one end of a long, unventilated corridor.At the other end of the corridor a small amount of an aerosol is released containing the volatile, fragrant compounds: acetaldehyde (C2H4O) jasmine lactone (C10H16O2) acetoin (C4H8O2) hexyl acetate (C8H16O2) 1-octen-3-one (C8H14O) Rank the compounds in the chronological order they are detected by the hound. 1-octen-3-one acetoin jasmine lactone hexyl acetate acetaldehyde
- When performing arecrystallization, slocent with a boiling point less must be use than the melting point of the compound being recrystallized. For benzil ( m.p.94-95C) which solvent would be best for this recrystallization? toluene (b.p. 110C) H2O (b.p.100 C) ethane( bo -98) methanol(bp64.7)1. Calculate the percent by volume of acetic acid by fermentation. Assumptions: No volume changed during fermentation and conversion efficiency is 85%. Overall chemical reaction facilitated by Acetobacter aceti:C2H5OH + O2 = CH3COOH + H2OGiven: Volume of 6% C2H5OH = 3 LMolar mass of C2H5OH = 46.07 g/molMolar mass of CH3COOH = 60.06 g/molDensity of C2H5OH = 0.789 g/mLDensity of CH3COOH = 1.05 g/mLCH.8 #8 - Please fill in the blank, cirlce your answer for thumbs up!