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In principle, aldehyde 1 can trimerize under acid catalysis to furnish the trioxane product 2. Estimate...
13. (12 pts) Using the following bond dissociation energies, estimate the enthalpy of the reaction for...
13. (12 pts) Using the following bond dissociation energies, estimate the enthalpy of the reaction for the reaction between acetylene and hydroiodic acid to generate 1,2-diiodoethane. нн H-CEC-H 2 H- Bond Bond Enthalpy (kJ/mol) Bond Bond Enthalpy (kJ/mol) 839 C-H 413 С-С сс 348 C-I 240 Н-1 299 7
BO D Which of ten The reaction of A to B. B) The reaction of B...
BO D Which of ten The reaction of A to B. B) The reaction of B to C. C) The reaction of C to D. D) All three steps occur at the same rate: there is no rate-limiting step. E) The most exothermic step is rate-limiting. esaretim Rank the following carbocations in order of stability. (The most stable is first.) > III II B) II > > III C) III > > II I > Il > III D 36)...
5. Heptane is the zero of the octane rating of motor fuel. It burns according to the following: CH16+ 1102 à 7CO2 + 8H2...
5. Heptane is the zero of the octane rating of motor fuel. It burns according to the following: CH16+ 1102 à 7CO2 + 8H20 Estimate the enthalpy change in the reaction by using bond dissociation energies, and classify the reaction as exothermic or endothermic overall. (Average BDEs in kcal/mol: C-H, 99, 0-0, 119; C=0, 191; H-O 112]. (Hint: C-H16 has 16 C-H bonds) 6. Noting that all the reagents and products in problem 5 are gases under the conditions of...
Ho for the pre c! . Given the bond dissociation energies below in Kcal/mol, estimate the ano forth (CH),CH-CI step...
Ho for the pre c! . Given the bond dissociation energies below in Kcal/mol, estimate the ano forth (CH),CH-CI step . CHCI c) 40 kcal/mol (CH.J.CH a) +22 kcal/mol b)-22 kcal/mol e) -45 kcal/mol he major monobrominated product that results from when methylcyclopentane is subjected d) +45 kcal/mol c) a tertiary halide radical bromination is b) a secondary halide e) bromomethane a) A primary halide d) A quaternary halide 3. Which of the following is a termination a) Cl +...
2. Consider the reaction below and answer the questions that follow. You can ignore stereochemistry in this problem...
2. Consider the reaction below and answer the questions that follow. You can ignore stereochemistry in this problem: 16 points. Brzor Br hy a. Complete the two propagation steps for the reaction by filling in 'curved arrows' (that show the making/breaking of bonds) and the structures of A-C. (8 points) (2) Br: b. Using the bond dissociation enthalpies (BDEs) given below, calculate AH (in kcal mol') for each propagation step as well as for the overall reaction. Show your work....
For the reaction below: CH4 •он CH3 H-OH a. Estimate the gas phase enthalpy change using...
For the reaction below: CH4 •он CH3 H-OH a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the direction written? For the reaction below: CH4 + Fz CH3-F H/F a. Estimate the...
Bond Enthalpies CHM113 Chapter 8 Resource Worksheets AH AH,+AH2 Resource 5: Bond Enthalpies 1. Estimate the...
Bond Enthalpies
CHM113 Chapter 8 Resource Worksheets AH AH,+AH2 Resource 5: Bond Enthalpies 1. Estimate the enthalpy change of the following reactions using the bond energies below. a. H-H. CI-CI - H- C H -CI AHLEWJI 14: 2 0 d. CH_(g) +H:(g) - C He(g) e. 2 NH; + 3 HOCI ™N2 + 3 H2O + 3 HCI f. CH. (8) +20,($) → CO. (8) + 2 H20 (2) g. 2 H (@) +0, (g) → 2 HO () h....
a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from...
a. Estimate the gas phase enthalpy change
using bond dissociation enthalpies from the OWL Table
Reference, not data from your text. Click the
References button and then click the
Tables link on the drop-down that appears. Include
algebraic sign and units.
b. Is the reaction exothermic or
endothermic?
c. Is the reaction likely to proceed
spontaneously in the direction written?
Use the References to access important values if needed for this question For the reaction below: Br OH -CH CHy-...
1. Estimate the enthalpy (kJ) from bond energies CCl4(g) + O2(g) → CO2(g) + 2Cl2(g) 2....
1. Estimate the enthalpy (kJ) from bond energies CCl4(g) + O2(g) → CO2(g) + 2Cl2(g) 2. Estimate the enthalpy (kJ) from bond energies H2(g) + CO2(g) → H2O(g) + CO(g) 3. Consider the condensation reaction of CCl4. Indicate ΔSo > 0, ΔSo ~ 0, or ΔSo < 0 4. Consider the following reaction: CaCO3(s) → CaO(s) + CO2(g), Indicate if ΔSo is >0, <0, or ~0 5. Consider the condensation reaction of CCl4 and select the accurate statement, (consider signs...
2. Explain why cycloheptatriene, shown below, will react with an acid to form a carbocation (the...
2. Explain why cycloheptatriene, shown below, will react with an acid to form a carbocation (the tropyllum ion)? 3. Predict the major organic product in the following reaction HBT 4. What is the major product of the following reaction? OH HINO, TO CHÚCH . 5. What is the major product of the following reaction? ME E1,0 2)H,09 6. We learned that the bond dissociation ener() of the highlighted C-H bond in toluene is lower than the DE of the C-H...
13. (12 pts) Using the following bond dissociation energies, estimate the enthalpy of the reaction for the reaction between acetylene and hydroiodic acid to generate 1,2-diiodoethane. нн H-CEC-H 2 H- Bond Bond Enthalpy (kJ/mol) Bond Bond Enthalpy (kJ/mol) 839 C-H 413 С-С сс 348 C-I 240 Н-1 299 7
BO D Which of ten The reaction of A to B. B) The reaction of B to C. C) The reaction of C to D. D) All three steps occur at the same rate: there is no rate-limiting step. E) The most exothermic step is rate-limiting. esaretim Rank the following carbocations in order of stability. (The most stable is first.) > III II B) II > > III C) III > > II I > Il > III D 36)...
5. Heptane is the zero of the octane rating of motor fuel. It burns according to the following: CH16+ 1102 à 7CO2 + 8H20 Estimate the enthalpy change in the reaction by using bond dissociation energies, and classify the reaction as exothermic or endothermic overall. (Average BDEs in kcal/mol: C-H, 99, 0-0, 119; C=0, 191; H-O 112]. (Hint: C-H16 has 16 C-H bonds) 6. Noting that all the reagents and products in problem 5 are gases under the conditions of...
Ho for the pre c! . Given the bond dissociation energies below in Kcal/mol, estimate the ano forth (CH),CH-CI step . CHCI c) 40 kcal/mol (CH.J.CH a) +22 kcal/mol b)-22 kcal/mol e) -45 kcal/mol he major monobrominated product that results from when methylcyclopentane is subjected d) +45 kcal/mol c) a tertiary halide radical bromination is b) a secondary halide e) bromomethane a) A primary halide d) A quaternary halide 3. Which of the following is a termination a) Cl +...
2. Consider the reaction below and answer the questions that follow. You can ignore stereochemistry in this problem: 16 points. Brzor Br hy a. Complete the two propagation steps for the reaction by filling in 'curved arrows' (that show the making/breaking of bonds) and the structures of A-C. (8 points) (2) Br: b. Using the bond dissociation enthalpies (BDEs) given below, calculate AH (in kcal mol') for each propagation step as well as for the overall reaction. Show your work....
For the reaction below: CH4 •он CH3 H-OH a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL Table Reference, not data from your text. Click the References button and then click the Tables link on the drop-down that appears. Include algebraic sign and units. b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the direction written? For the reaction below: CH4 + Fz CH3-F H/F a. Estimate the...
Bond Enthalpies
CHM113 Chapter 8 Resource Worksheets AH AH,+AH2 Resource 5: Bond Enthalpies 1. Estimate the enthalpy change of the following reactions using the bond energies below. a. H-H. CI-CI - H- C H -CI AHLEWJI 14: 2 0 d. CH_(g) +H:(g) - C He(g) e. 2 NH; + 3 HOCI ™N2 + 3 H2O + 3 HCI f. CH. (8) +20,($) → CO. (8) + 2 H20 (2) g. 2 H (@) +0, (g) → 2 HO () h....
a. Estimate the gas phase enthalpy change
using bond dissociation enthalpies from the OWL Table
Reference, not data from your text. Click the
References button and then click the
Tables link on the drop-down that appears. Include
algebraic sign and units.
b. Is the reaction exothermic or
endothermic?
c. Is the reaction likely to proceed
spontaneously in the direction written?
Use the References to access important values if needed for this question For the reaction below: Br OH -CH CHy-...
2. Explain why cycloheptatriene, shown below, will react with an acid to form a carbocation (the tropyllum ion)? 3. Predict the major organic product in the following reaction HBT 4. What is the major product of the following reaction? OH HINO, TO CHÚCH . 5. What is the major product of the following reaction? ME E1,0 2)H,09 6. We learned that the bond dissociation ener() of the highlighted C-H bond in toluene is lower than the DE of the C-H...
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Sample Value
Sample Value
Sample Value
pirate_num
11
22
43
54
pirate_lname
James...
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