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- -Aside from London dispersion forces, which substance do you expect dipole interactions to be effective? a. Substance A and B b. Substance B and D c. Substance A and C d. Substance B and E -Which substances can react with potassium borohydride, converting the product into alkene alcohol (assuming complete reaction)? a. Substance A and B b. Substance B and D c. Substance C and D d. Substance D and E -The presence of trans pi bonds can influence molecular stacking due to the limitation of bond rotation. Based on this information, which substance is characterized by molecules that have effective molecular stacking? a. Substance A b. Substance B c. Substance C d. Substance D e. Substance E -Which substance CANNOT decolorize bromine water? a. Substance A b. Substance B c. Substance C d. Substance D e. Substance E1. Rank the following molecules in order from highest boiling point temperature to highest boiling point temperature. Highest bp A OH OH OH B OH с OH H O Nat Lowest bpWhich of the following substances can form hydrogen bonds? Substances: (1) CH3COCH3; (2) CH3OH; (3) C2H6; (4) HCOOH A. compounds 1 and 2 B. compounds 1 and 3 C. compounds 1, 2, and 3 D. compounds 2 and 4 E. compounds 1, 2, and 4
- 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.…What types of intermolecular forces are exhibited by each compound? rd OH b. OCH3 9 d.1. Rank the following molecules in order from highest boiling point temperature to lowest boiling point temperature. Highest bp A OH OH OH E B F OH C G OH D H O Na+ Lowest bp 2. Propan-1-ol (CH3CH₂CH₂OH) and methyl ethyl ether (CH3OCH₂CH3) have the same molecular formulas but different bonding (constitutional isomers). These two molecules have drastically different boiling points: 97.5 °C for propan-1-ol and 45.32 °C for methyl ethyl ether. Draw the bond line structure of each molecule. Explain the difference in the boiling points of these molecules, using intermolecular forces. (1-3 complete sentences)
- 1. Arrange the following compounds in the following order. Explain your arrangement. Br, CO,, H,, CH, Lowest boiling point --------> highest boiling pointConsider the data in the table. Compound Melting point (°C) ????? (??/???)ΔHfus (kJ/mol) Boiling point (°C) ????? (??/???)ΔHvap (kJ/mol) HFHF −83.11 4.577 19.54 25.18 HClHCl −114.3 1.991 −84.9 17.53 HBrHBr −86.96 2.406 −67.0 19.27 HIHI −50.91 2.871 −35.38 21.16 Using the data in the table, calculate Δ?fusΔSfus and Δ?vapΔSvap for HF.HF. Δ?fus=ΔSfus= J/(K⋅mol)J/(K⋅mol) Δ?vap=ΔSvap= J/(K⋅mol)J/(K⋅mol) Determine the entropy change when 7.60 mol HF(l)7.60 mol HF(l) boils at atmospheric pressure. Δ?=ΔS= J/K2. Name the ether CH 3 -O-CH 2 CH 2 CH 2 CH 3 3. Name the ether 4. Draw the structure of a molecule that is an ether with molecular formula C 6 H 14 O 5. Which compound in each pair has the higher boiling point? CH 3 CH 2 CH 2 OH or HOCH 2 CH 2 OH
