Predict the enthalpy (ΔH) value for the theoretical reaction below, and indicate whether it is endothermic...
Predict the enthalpy (ΔH) value for the theoretical reaction below, and indicate whether it is endothermic or exothermic. The bond dissociation energy for each bond in Kcal/mol is shown below each reactant and product. (3p)
A-B + C-D → A-C + B-D
63 88 47 96
A) +8 Kcal/mol, endothermic
B) -8 Kcal/mol, exothermic
C) +16 Kcal/mol, endothermic
D) +8 Kcal/mol, exothermic
Homework Answers
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Predict the enthalpy (ΔH) value for the theoretical reaction
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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)...
For the reaction below: a. Determine whether the reaction is energetically favorable at room temperature. Assume that ΔS...
For the reaction below:
a. Determine whether the reaction is energetically favorable at
room temperature. Assume that ΔS=O. Calculate the gas phase
enthalpy change using bond dissociation enthalpies at 25°C from the
table below. Hint: Be aware that the bond energy for the C-H bond
varies considerably and may change during the reaction; therefore,
you will find several entries for C-H bonds in the table. Include
the algebraic sign and specify units, e.g. -45 kJ/mol. Calculate to
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For the reaction below CHy CH a. Estimate the gas phase enthalpy change using bond dissociation e...
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1a. Using bond dissociation energies, calculate the heat of reaction (ΔH) for the reaction shown below....
1a. Using bond dissociation energies, calculate the heat of
reaction (ΔH) for the reaction
shown below. Show all your work and provide a reference for where
you got your bond
dissociation energy values.
1b. Is this reaction endothermic or exothermic? Explain. Provide
energy diagrams
showing the two processes. Circle the one that corresponds to this
reaction. Label the axis
appropriately as well as the activation energy (Ea).
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2). Consider the following intramolecular S2 reaction. no ♡ + HI A) (5 pts) Use the...
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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)...
For the reaction below:
a. Determine whether the reaction is energetically favorable at
room temperature. Assume that ΔS=O. Calculate the gas phase
enthalpy change using bond dissociation enthalpies at 25°C from the
table below. Hint: Be aware that the bond energy for the C-H bond
varies considerably and may change during the reaction; therefore,
you will find several entries for C-H bonds in the table. Include
the algebraic sign and specify units, e.g. -45 kJ/mol. Calculate to
the nearest single...
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...
For the reaction below CHy CH a. Estimate the gas phase enthalpy change using bond dissociation enthalpies from the OWL. Table Reference, not data from your text. button and then click the Tables link on the drop-down that appears. Include algebrakc sign and units b. Is the reaction exothermic or endothermic? c. Is the reaction likely to proceed spontaneously in the direction written? Submit Answer Retry Entire Group 1 more group attempt remaining 1 For the reaction below: a. Estimate...
Bond H-H Predict whether the following reactions will be exothermic or endothermic. Reaction A. N. (9) + 3H,9 — 2NH, Reaction B. S(g) +0,2) 0,() Reaction C. 2H,09) — 2H,(g) +0,($) Reaction D. 2F(g) — F, (g) N=N AH° (kJ/mol) 432 942 494 155 0=0 F-F H-N 386 459 H-O S=0 522 Which reaction(s) are endothermic? Which reaction(s) are exothermie? D ID OB Strongest bond Weakest bond Answer Bank Si-F Si-I Si-CI
1a. Using bond dissociation energies, calculate the heat of
reaction (ΔH) for the reaction
shown below. Show all your work and provide a reference for where
you got your bond
dissociation energy values.
1b. Is this reaction endothermic or exothermic? Explain. Provide
energy diagrams
showing the two processes. Circle the one that corresponds to this
reaction. Label the axis
appropriately as well as the activation energy (Ea).
la. Using bond dissociation energies, calculate the heat of reaction (AH) for the...
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....
2). Consider the following intramolecular S2 reaction. no ♡ + HI A) (5 pts) Use the table of Bond Dissociation Enthalpies (at the back of the exam) to calculate the approximate ΔΗπη. B) (3 pts) Is the reaction endothermic or exothermic? Why? C) (6 pts) Draw the Reaction Energy Coordinate Diagram. Label the axes, reactant(s), product(s), transition state(s), intermediate(s), activation energy, and reaction enthalpy. D) (3 pts) In regards to entropy, would you expect the reaction to be favorable, or...
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