The systematic name for isopropyl alcohol, for example, is 2-propanol. CH 3 OH: Methanol : CH 3 CH 2 OH: Ethanol: CH 3 CHOHCH 3: 2-Propanol . As a result, alcohols have boiling points that are much higher than alkanes with similar molecular weights. The boiling point of ethanol, for example, is 78.5ºC, whereas propane, with about the same the boiling point of the solvent in a solution is higher than that of the pure solvent; the freezing point (melting point) of the solvent in a solution is lower than that of the pure solvent. We have looked at this with water as the solvent, but using a different solvent would make no difference to the argument or the conclusions. The only
• The boiling point of alcohols increases as the molecules become larger. Name Structure Molecular Weight Boiling Point propane CH3CH2CH3 44.09 g/mol -42.1°C - 2-propanol - 2-methylpropane - 2-pentanol 24. Chapter 3 Alcohols, Phenols, and Ethers 13 25 Reactions of Alcohols 26
Formula: C 4 H 10 O 2. Molecular weight: 90.1210. IUPAC Standard InChI: InChI=1S/C4H10O2/c1-4 (5)3-6-2/h4-5H,3H2,1-2H3. Copy Sheet of paper on top of another sheet. IUPAC Standard InChIKey: ARXJGSRGQADJSQ-UHFFFAOYSA-N. Copy Sheet of paper on top of another sheet. CAS Registry Number: 107-98-2. Chemical structure:
For example, propan-2-one or acetone, CH 3 (CO)CH 3, has a boiling point of 56-57 °C whereas 2-propanol, CH 3 CH(OH)CH 3, has a boiling point near 83 °C. Explain the difference. Answer. The differences in melting points and boiling points are quite straightforward. The first example possesses no potential for hydrogen bonding. A) LiCl (aq) A bottle of rubbing alcohol contains both 2-propanol and water. These liquids can be separated by the process of distillation because the 2-propanol and water. A) have combined chemically and retain their different boiling points. B) have combined chemically and have the same boiling point. C) have combined physically and retain 1c2Qp7.
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    • boiling point of 2 propanol