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| Question | Answer |
| Question 1: Given the molecular formula and the HNMR shown below, predict the structure of the unknown. (There are two doublets at 7.1 with an integration of 2 and 6.7 with an integration of 2, a singlet at 5.4 ppm with an integration of 1, a quartet at 2.6 with integration of 2 , and a triplet at 1.3 with integration of 3. Chemical formula of: C8H10O. | E |
| question 2: Given the molecular formula and the HNMR shown below, predict the structure of the unknown compound. (For the HNMR, there is a singlet at 3.68 with an integration of 3 and a singlet at 1.28 with an integration of 9). Chemical formula: C6H1202. | C |
| question3. Given the molecular formula and the HNMR shown below, predict the structure of the unknown. (There is a singlet at 9.88 with an integration of 2, a doublet at 8.17 with an integration of 2, a triplet at 7.72 with an integration of 1, and a singlet at 7.70 with an integration of 1). Chemical Formula: C8H6O2. | A |
| question4. Given the molecular formula of the unknown, the HNMR and CNMR shown below, predict the structure of the unknown compound. (For the HNMR, there is a singlet at 11 with an integration of 1, septet at 3.16 with an integration of 1 and a doublet at 1.07 with an integration of 6).( For the CNMR, there are four peaks: 20, 30, 170, and 190). Chemical Formula: C5H8O3. | F |
| question5: What conformation in a keto-enol tautermism is most stable? | Keto Form |
| question6: What is the most acidic organic compound: Carboxyllic acid or sulfonic acid? | Sulfonic Acid |
| question7: Given the molecular formula and the HNMR shown below, predict the structure of the unknown. (There is a doublet with an integration of 12 at 1.2 ppm, Multiplet with an integration of 2 at 2.9 ppm, singlet with an integration of 1 at 5.5 ppm, singlet with integration of 1 at 6.8 ppm, and singlet with an integration of 1 at 6.9 ppm ). Chemical Formula: C12H18O. | B |
| question8:Given the molecular formula and the HNMR shown below, predict the structure of the unknown.(HNMR: triplet with integration of 3 at 1.4 ppm, singlet with integration of 3 at 2.4 ppm, doublet with integration of 2 at 6.8 ppm, and doublet with an integration of 2 at 7.2 ppm.) Chemical formula: C9H12O. | D |