4 H₂C H3C C=0 + NaBH4 + 4 CH₂OH 38 g/mol 58 g/mol A. 51.7% B. 78.9% 4 C. 50% D. 25% E. 75% H3C OH H3C H 60 g/mol Suppose that the reaction of 5.8 g of acetone with 3.8 g of NaBH4 gives 1.5 g of isopropyl alcohol. What is the % yield of isopropyl alcohol? Circle the correct answer. C + NaB(OCH3)4
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- Reagents a. C6H5CHO b. NaOH, ethanol h. BrCH2CH=CH2 i. Na* OEt, ethanol j. Br2, H* k. K* t-BuO c. Pyrrolidine, cat. H* d. H2C=CHCN e. H3O* f. I. CH2(CO2ET)2 -CH2CH2CN LDA m. heat g. ELOC(=0)CO2ET Select reagents from the table to synthesize this compound from cyclopentanone. Enter the letters of the chosen reagents, in the order that you wish to use them, without spaces or punctuation (i.e. geda).H3C CH₂. CH3 Isobutyl alcohol (1 equiv) H30+Ch 20. Carboxylic Acids and Nitriles Preparation of carboxylic acid - Primary alcohol: to carboxylic acid by strong oxidation reagents such as CrO3 (Secondary alcohol: oxidized to ketone) - Carboxylation of Grignard Reagents (with CO₂) R-MgBr + O=C=O → RCO₂H Br 1. Mg, ether 2. CO₂ 3. H₂O* - Aromatic alkyl group oxidized into benzoic acid by KMnO4 Ph-R + KMnO4 → Ph-CO₂H KMnO4 Nitriles reactions - Acidic water oxidized nitriles into carboxylic acid R-CN → R-CO₂H CN H₂0* heat - LiAlH4 reduces nitrile into amine (R-CH₂NH₂)
- 2) Which of the following is a tertiary (3°) alcohol? А. D. H2 C. CH3 HO- H2C CH CH3 H2C-CH2 H3C В. OH Е. CH3 CH CH3 H3C H2 H3C- -C-CH3 С. OH H2 H3C. HO, C' H2 HCI HC HC wwwThe organic product formed when propanoic acid reacts with ethanol in the presence of an acid catalyst is called 夫丰三丰 H H H H %23 H-C-C C+ H. H H H. H H esterlink O propylethanoate O propylethanoic acid Octhyl propanoic acid. O ethylpropanoate3. 1. Which of the following is an alcohol? a. NaOH b. H3C C. -NH₂ OH d. CH 3 CH 2 OH e. a. 1s²2s²2p¹3s2² b. 1s¹2s¹2p 3s² c. 1s²2s²2p6 H3C H3C 2. How many actual double bonds does the benzene ring possess? d. 1 e. 0 -CH3 a. 4 b. 3 C. 2 Which of the following is the electron configuration for neon? d. 1s³2s³2p4 e. 1s²2s²2p8
- Order the compounds from lowest vapor pressure to highest vapor pressure Ob. CH3-CH2-O-CH2-CH3 CH3CI HO-CH2-CH2-OH x a. CH3CI < HO-CH2-CH2-OH< CH3-CH2-O-CH2-CH3 Od. HO-CH2-CH2-OH CH3CI < CH3-CH2-O-CH2-CH3 C. CH3-CH2-O-CH2-CH3 HO-CH2-CH2-OH CH3CI7. H3C-CH The compound above is classified as a(n) alkane d. ketone alkene a. e. b. carboxylic acid c. akdehyde 8. Which of the follow ing is a secondary alcohol? d. CH3OH a. H3C C CH3 CH3 b. H3C0-CH3 e. CH3CH2OH c. OH H3C CH3 H. 9. CH3 OH -CH-CH-CH, H3C What is the correct name for the above compound? a. 2-methyl-3-butanol b. 2-pentanol isobutanol d. 3-methy-2-butanol none of these e. c.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.
- Reagents a. CeHsCHO b. NaOH, ethanol c. Pyrrolidine, cat. H* d. H2C=CHCN e. H30* f. LDA g. ELOC(=0)CO,Et h. BRCH2CH=CH2 Na* OEt, ethanol j. Br2, H* k. K* t-BuO 1. CH2(CO2Et)2 m. heat Select reagents from the table to synthesize this compound from cyclopentanone. Enter the letters of the chosen reagents, in the order that you wish to use them, without spaces or punctuation (i.e. geda). Submit Answer Try Another Version 1 Item attempt remainingH. E. G но но HO B. C HO ONa HO 2.52 Rank molecules A-H in order from lowest to highest boiling point. 2.8 Ranking Boiling Points and Solubilities of Structurally Similar Compounds3. Molecules with more than one alcohol group can react with thionyl chloride (SOCI.) in a way that is different from that of single alcohols. Consider the example below. Provide a reasonable structure for product A CI + 2 HCI OH (product A) он