231 Additional Problems 7.31 The odor of a human's armpit is due to a number of molecules, including some sulfur-containing compounds. Indeed, the major component in the odor of sweat is (S)-3-methyl-3-mercapto-1-hexanol. Draw the structure of this thiol. 7.32 Thymol is an antibacterial oil obtained from thyme (Thymus vulgaris). The IUPAC name of this compound is 2-isopropyl-5-methylphenol. Draw the structure of thymol. Properties of Alcoh ols 7.33 Classify the alcohols in parts a, d, f, h, i, and j of Problem 7.26 as primary, secondary, or tertiary Thyme (Thymus vulgaris), source of the antibacterial oil thymol. 7.34 Arrange the compounds in each of the following groups in order of increasing solubility in water, and briefly explain your answers: a. 1-octanol; ethanol; ethyl chloride b. HOCH2(CHOH)3CH2OH; 1,5-pentanediol; 1-pentanol Acid-Base Reactions of Alcohols and Thiols 7.35 The following classes of organic compounds are Lewis bases. Write an equation that shows how each class might react with H+ a. amine, R3N: b. ether, ROR c. ketone, R2C=0 choice of order: 7.36 Arrange the following compounds in order of increasing acidity, and explain the reasons for cyclopentanol, phenol, p-nitrophenol, and 2-chlorocyclopentanol. your 7.37 Which is the stronger base, potassium t-butoxide or potassium ethoxide? (Hint: Use the data in Table 7.2.) 7.38 Complete each of the following equations: a. CH,CH(ОН)CH,CH, + K — b. (CH),СHОН + NaH — Н +NaOH ОН d. OH NaOH С. СI- e. CH2CH=CHCH2SH + NaOH> 7.39 Explain why your answers to parts c, d, and e of Problem 7.38 are consistent with the pKgs of the starting acids and product acids (see eqs. 7.14, 7.15, and 7.48) Acid-Catalyzed Dehydration of Alcohols 7.40 Show the structures of all possible acid-catalyzed dehydration products of the following. If more than one alkene is possible, predict which one will be formed in the largest amount. b. 1-methylcyclopentanol d. 2-hexanol a. 3-methylcyclopentanol c. 2-phenylethanol 7.41 Explain why the reaction shown in eq. 7.19 occurs much more easily than the reaction (CH3)3C-OH (CH),C + HO. (That is, why is it necessary to protonate the alcohol before ionization can occur?) 7.42 Draw a reaction energy diagram for the dehydration of tert-butyl alcohol (eq. 7.21). Include the steps shown in eqs. 7.18-7.20 in your diagram. Squared Studios/Photodisc/Getty Images

Oxaloacetic acid (or 2‑ketosuccinic acid) is a very important intermediate in metabolism. The compound is involved in the citric acid cycle for energy production within the cell. However, the compound is unstable and slowly decomposes spontaneously. Draw the decomposition products.

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What are the products in the following chemical equation: Zn+CuSO4 --> ZnSO4 + Cu

Which element is present in all organic compounds?A. Helium C. CarbonB. Nitrogen D. Oxygen 2. What products are obtained with CH 4 (g) burns completely in an excess ofoxygen? A. CO 2 C. Hydrogen gasB. CO 2 and H 2 O D. Explosion 3. A hydrocarbon molecule is saturated if the molecule contains ___________A. Single covalent bonds, only C. A double covalent bond, onlyB. A triple covalent bond D. Single and double covalent bonds4. A functional group with a carbonyl group functionality is _________________. A. Alcohol C. EsterB. Amine D. Ketone5. Choose the incorrect option regarding Isomerism: A. They differ in both physical and chemical propertiesB. They have the different molecular formulaC. Chain isomers differ in the arrangement of their skeletonD. They have the same molecular formula 6. Which among the following is formed when an alcohol is dehydrated? A. Aldehyde C. AlkeneB. Ketone D. Amine 7. The reaction of water with alkene to produce an alcohol is a/an ______reaction. A. Addition…

What is the heat of combustion of ethane, C2H6, in kilojoules per mole of ethane? Properties of C2H6 at 298K ∆Hf °kJ/mol =  –84.0 ∆Gf°kJ/mol –32.0 S°J/(mol·K) =  229.2 Δ?∘rxn=___________kJ/mol ethane

complete the reaction : 2Al + Fe2O3 =

formation of dimethyl tetraphenylphthalate tetraphenylcyclopentadienone: 0.121 g dimethyl acetylenedicarboxylate: 0.1 mL Amount of dimethyl tetraphenylphthalate: 0.18 g theoretical yield: ?  percent yield: ?

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At constant pressure and 25°C, the ΔrH° for the following reaction is –1560 kJ/mol C2H6(g) + 3.5O2(g) → 2CO2(g) +0.5 H2O(l) What is the enthalpy change for the oxidation of 5 g of C2H6?