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- 3. Consider the following pairs of compounds. ( a. Br2 and 1₂- Pick the one with the higher vapor pressures at a given temperature. b. NH3 or CH4 - Pick the one with the higher boiling point.Essential oils are concentrated liquid containing metabolites extracted from plant sources and are widely used in the production of perfumes. The structures of some of these compounds present in essential oils, along with acetone, are presented below. CH3 H2C CH H2 H3CO, CH2 CH H2C H2C CH FCH2 HO H3C CH2 Compound A MM: 164.2 g/mol Boiling Point: 254 C Compound B MM: 162.19 g/mol Boiling Point: 232 C Compound C MM: 136.24 g/mol Boiling Point: 176 C Determine the most possible boiling point of each of the compounds. Refer to the possible boiling points listed above. An equal volume of COMPOUNDS A, B and C were stored in separate beakers which were left uncovered at room temperature. 1. 2. If the three liquids were allowed to stand for about 10 minutes, which of the following will have the least amount of liquid b. What physical property is the basis of the answer? Among the three liquids, what is the most recommended ingredient of a perfume that will have the most lasting scent? а.…7. Butane and 2-methylpropane, whose space-filling models are shown, are both nonpolar and have the same molecular formula, yet butane has the higher boiling point. Which of the following will explain why? (a) Butane (b) 2-Methylpropane A. Butane has greater molar mass B. 2-methylpropane exhibits weak dipole-dipole forces C. 2- methyl propane has larger dispersion forces due to more polarizable electron cloud D. Butane has greater surface area thus larger total dispersion forces.
- 7. Which of the following compounds has the highest boiling point? (1) Н-0 (2) H2S (3)H2Se (4)H,TeArrange F2, HF, and H₂O in the order of increasing boiling points. H₂O < HF < F2 H₂O < F₂ < HF F2 < HFCH3 19. CH3-CH2-NH-CH3 CH3-N-CH; CH;CH,CH2-OH A B Rank the following in order of lowest boiling point to highest boiling point based on intermolecular hydrogen bonding. Оa. А, В, С Ob. В , С, А Ос. В, А, С Od. C, B, А Ое. С, А, ВRank these compounds from lowest to highest boiling point. HO, HO, HO. II Il < 1 < III a. O b. 1< Il < III O c. Il < III < I O d. 1< IIl < II %3D2. Rank the following substances in order of increasing boiling points: H₂O, Br2, KCl, HCl HCl < Br₂Rank the following compounds in order of decreasing boiling point. ннннн IIIII Н-С-С-С-С-С-Н ннннн O III>I>IV>I| © II>IV>I>III O III>I>II>IV IV>II>I>III © I>III>II>IV нннн н-с-с-с-с-о-н .... нннн || н НIН нн С н Н-С-С-С-С-Н H H H H H нн Ш Η Η Η Η н-с-с-с-C-N-H ..... НЕНН Н IVAre the London dispersion forces the same for all molecules or are they different and why? Molecules: Ethanamide, Acetic Acid, Propanol, and n-PropylamineOrder the compounds made of the following molecules by increasing melting point. O= molecule HO-C-(CH2)18-CH3 i HỌ—C—(CH2)20—CH3 HỌ. C—(CH2)7—CH=CH—(CH2)5—CH3 HO-C-(CH2)16-CH3 melting point (Choose one) 1 (lowest) 2 3 4 (highest) (Choose one) (Choose one) (Choose one) X9. Draw Lewis Structures of the following compounds: (You will use these Lewis Structures to predict intermolecular forces.) 1. Compound V (CH3CH3) 2. Compound W (HOCH2CH2OH) 3. Compound X (CH3CH2CH3) 4. Compound Y (CH3CH2OH). 5. Compound Z (CH3-O-CH3)SEE MORE QUESTIONSRecommended textbooks for youChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning