PRE_LAB_7

1.The reduction of butanoic acid can form butanal and butan-1-ol. The boiling points of these compounds are shown in Table 1 below. Table 1-Boiling points of butanyl- compounds. Boiling Point (°C) Compound butan 1-ol 120 butanal 75 butanoic acid 164 a) Write a balanced chemical equation for this reaction.. Clearly indicate what conditions, catalysts, solvents, or other reagents would be required to perform this reaction. Include state symbols. b) Explain, with reference to intermolecular forces, how the process of distillation could be used to separate butan-1-ol from the other organic compounds in this reaction mixture. c) Describe an experimental procedure for a simple test that can be performed to confirm that the sample of butan-1-ol obtained by distillation does not contain any butanoic acid.

Which of the following parameters affects the rate and kinetics of a reaction? A. Solvent medium B. Reaction temperature C. Reaction time D. Geometry and structure of the alkyl halide E. pH

What are elimination reactions? What are the two main mechanisms for elimination reactions? What are the differences in the mechanisms? Can there be a competition between substitution and elimination? What reaction conditions favor elimination? How does all this relate to the experiment at hand?

In Chapter 18, we will learn about the hydrolysis of acetals to aldehydes and ketones. Four of the seven steps in the mechanism for this process are shown in the conversion of acetal A to hemiacetal E. a.Add curved arrows for each step. b.Draw another resonance structure for C. c.Identify the nucleophile and electrophile in Step [3]. d.Which steps are Brønsted–Lowry acid–base reactions?

1. Organometallic reagents are characterized by a. Polar bonds b. Carbon bonded to an electropositive element c. Carbon behaving as a free carbanion d. All of these 2. What is the product of the following reaction? a. I b. II c. III d. IV

A reaction flask contains 2-bromopentane in an ethanolic solution of sodium ethoxide at room temperature and result in the formation of two olefnic products. What is responsible for the formation of major and minor products.                A. Different activated complex involved in the mechanism.                                      B. Bimolecular nucleophilic substitution reaction.                                C. Bimolecular elimination reaction        D. The presence of sodium ethoxide.     E. The hybridization nature of secondary carbocation

2. Which of the following alkynes will form only 1 product in acid-catalyzed hydration? a. 2-pentyne b. 3-hexyne c. 3-pentyne d. 1-hexyne 3. Which of the following statements best describes the general reactivity of alkynes? a. An alkyne reacts as an electrophile and is, therefore, electron poor. b. Alkynes undergo electrophilic addition reactions just like alkenes. c. An alkyne reacts as an electrophile and is therefore electron-rich. d. An alkyne reacts as a nucleophile and is therefore electron-poor.

In the acid catalyzed hydration reaction of 3-Methyl-1-hexene. The product will be: HCI + H₂O a. 2-Methyl-3-hexanol. b. 3-Methyl-1-hexanol. c. 3-Methyl-2-hexanol. d. 3-Methyl-3-hexanol.

9. Give the product structure and the mechanism for the reaction of diethyl carbonate with ethyl 3-phenylpropionate reacted sequentially with  a. sodium ethoxide in ethanol. b. sodium hydroxide. c. aqueous acid. d. heat.

Please help me with these organic chemistry questions. Be sure to show the mechanisms and intermediates.

QUESTION 18 The transformation of I to II is best accomplished by treating I with: NH3 Cl NH2 II O A. KOH O B. NH3 OC. HCI O D.H2 0 QUESTION 19 Click Save and Submit to save and submit. Click Save All Answers to save all answers. nere to search Esc F1 F2 F3 F4 F5 F7 F8 F9 %23 & 1 3 7 8 CO 5

1. Alcohols X and Y formed layers with Lucas reagent. Compound X formed brown precipitate with KMnO4 while compound Y did not. Which are the possible identities of compounds X and Y? a.tert-butanol, propanol b.isopropanol, isopentyl alcoholc. methanol, ethanold.tert-butanol, isopropanol2. Alcohols that cannot be distinguished using the Lucas test? a.isopropanol and methanol b.t-butyl alcohol and ethanol c.t-butyl alcohol and 2-methylbenzyl alcohol d.ethanol and n-propanol

Choose the two alkyl bromides and the hydrogenation method that must be used to synthesize these alkenes from acetylene. Enter your answer as two letters in alphabetical order, followed by a number; i.e. ac2, not ca2. Do not use punctuation. Alkyl Halides a. CH3CH2Br b. CH3(CH2)4Br c. CH3(CH2)5Br d. CH3(CH2)¿Br e. CH3(CH2)¬Br f. CH3(CH2)gBr g. CH3(CH2)12Br Hydrogenation Method 1. H2, Lindlar's catalyst 2. Na, NH3 (I) Alkene #1: CH3 H3C bb1 Alkene #2: H3C. CH3 df1

8. Write the product(s) for the following reactions. a. H,O* b. H,O 9. Write the formula of the alcohol that, when dehydrated, gives rise to each of the following alkenes. Hint: this problem is asking you to work backwards. a. b. 6. tv

could i get help with the one that are drawn out? Its just 3

12. 1,2-dibromobutane + 2 eq NaNH, / THF then H,SO, / water with heating à a. 1-butene b. 2-butanol c. 2-butanone d. 2-bromo-1-butanol е. something else!! 13. ethene + Br, / H,O à a. ethanol b. 2-bromoethanol c. ethanediol d. 1-bromoethane е. something else!! For 2/3 of a point: arrange these in order of increasing basicity; be sure to show this on the back-side of your scantron!! HSO, , OH , NH, , sodium acetate, LICH, , sodium phenoxide, sodium ethoxide

Draw the structure of the molecule indicated by the IUPAC name provided. Indicate stereochemistry

chem questions

When free radical halogenation is performed with one of the compounds below, only a single product with the formula C5H11Cl is isolated. Which compound fits this description? Select one:  a. 2,2-dimethylpropane b. cyclopentane c. pentane d. 2-methylbutane