Calculate the ratio of the rate constants for the breaking of a C-D bond vs a...
Calculate the ratio of the rate constants for the breaking of a C-D bond vs a C-H bond given that v ̃=2920 cm-1 and the temperature is 298K
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Calculate the ratio of the rate constants for the breaking of a
C-D bond vs a...
Calculate the ratio of the rate constants for the breaking of a C-D bond vs a...
Calculate the ratio of the rate constants for the breaking of a C-D bond vs a C-H bond given that v ̃=2920 cm-1 and the temperature is 298K
2. [Chang, 9.39] The rate-determining step of the bromination of acetone involves breaking a carbon-hydrogen bond....
2. [Chang, 9.39] The rate-determining step of the bromination of acetone involves breaking a carbon-hydrogen bond. Estimate the ratio of the rate constants kc-/kc-n for the reaction at 300 K. The frequencies of vibration for these particular bonds are VC- H 3000 cm-1 and VC- D 2100 cm-1. The wavenumber (ū) is given by v/c, where v is the frequency in s and c is the speed of light in a vacuum (3.00 x 10 m.s ).
Calculate the bond energy per mole for breaking all the bonds in methane, CH4
Part ACalculate the bond energy per mole for breaking all the bonds in methane, CH4.Express your answer to four significant figures and include the appropriate units.ΔHCH4 =1656 kJmolCorrectIn CH4, the energy required to break one C−H bond is 414 kJ/mol. Since there are four C−H bonds in CH4, the energy ΔHCH4 for breaking all the bonds is calculated asΔHCH4=4×bond energy of C−H bond=4×414 kJ/mol=1656 kJ/mol CH4 moleculesPart BCalculate the bond energy per mole for breaking all the bonds of oxygen,...
3(a) 14 points The structures below show the step-wise bond making and bond breaking in this...
3(a) 14 points The structures below show the step-wise bond making and bond breaking in this reaction. i. Draw curved arrows to show the electron flow that has occurred in each step. H :0u 4 H-CHa +H- H H H н' 16% i. Calculate Keq for the reaction at stp. il. Calculate AG for the reaction at stp. (b) 12 points] Using the bond dissociations values in the table below, calculate the AH for the reaction that convert haloalkane in...
6. Which of the following statements is not true? A) Bond breaking is endothermic. B) The...
6. Which of the following statements is not true? A) Bond breaking is endothermic. B) The bond dissociation energy for bond breaking is always negative. C) Bond making is exothermic. D) The bond dissociation energy for bond formation is always negative. 37. Using the bond dissociation energies given, calculate AH® for the following reaction. CH,CH -Br + H2O CH,CH-OH + HBr AH KJ/mol Bond A-B CH3CH2-Br H-OH сHCH-он H-Br A) +108 KJ/mol B) -130 KJ/mol C) -22 KJ/mol D) +22...
1. a) Use the Arrhenius equation to calculate the ratio of the rate constants k for...
1. a) Use the Arrhenius equation to calculate the ratio of the rate constants k for the hydrogen abstraction in methane with a chlorine atom and with a bromine atom at 25oC. Assume the A values for the two reactions are the same, and use Ea = 4 kcal/mol for chlorination and Ea = 19 kcal/mol for bromination. (b) The high selectivity of radical bromination towards secondary and tertiary C-H bonds disappears if equimolar mixture of Br2 and Cl2 are...
QUESTIONS Using Hooke's law, calculate the stretching frequency of a C-D bond if the stretching frequency...
QUESTIONS Using Hooke's law, calculate the stretching frequency of a C-D bond if the stretching frequency of a C-H bond is 3040 cm-1 2030 cm-1 2130 cm-1 2230 cm-1 2330 cm-1 2430 cm-1
3. Acetylene is a linear molecule with the C-C bond length of 120.3 pm and C-H...
3. Acetylene is a linear molecule with the C-C bond length of 120.3 pm and C-H bond legth of 106.0 pm. The fundamental frequencies of the mormal modes are vi = 1975 cm , V2 = 3370 cm , v = 3277 cm , VA = 729 cm", and vg = 600 cm . The normal modes V and vg are doubly degenerate. (a) [7 points) Calculate the moment of intertia, rotational temperature and vibra- tional temperature of each normal...
C) The bond length is less than the sum of the two atomic radii. D) Breaking...
C) The bond length is less than the sum of the two atomic radii. D) Breaking a covalent bond requires energy E) all of the above Answer 24. Draw the structural formula for acetylene, CHa, and state the type of bonds in an acetylene molecule. A) 3 single bonds B) 2 single bonds and I double bond C) 2 single bonds and 1 triple bond D) I single bond and 2 double bonds E) none of the above Answer 25....
The rate constant for a reaction that breaks a C-H bond in the rate-limiting step is about 8 times that for the same re...
The rate constant for a reaction that breaks a C-H bond in the rate-limiting step is about 8 times that for the same reaction if the hydrogen atom is replaced by a deuterium (D) atom. This phenomenon is called a primary kinetic isotope effect. From the information provided, determine how much larger the activation energy is for breaking the C-D bond. Be sure to specify any assumptions needed
2. [Chang, 9.39] The rate-determining step of the bromination of acetone involves breaking a carbon-hydrogen bond. Estimate the ratio of the rate constants kc-/kc-n for the reaction at 300 K. The frequencies of vibration for these particular bonds are VC- H 3000 cm-1 and VC- D 2100 cm-1. The wavenumber (ū) is given by v/c, where v is the frequency in s and c is the speed of light in a vacuum (3.00 x 10 m.s ).
3(a) 14 points The structures below show the step-wise bond making and bond breaking in this reaction. i. Draw curved arrows to show the electron flow that has occurred in each step. H :0u 4 H-CHa +H- H H H н' 16% i. Calculate Keq for the reaction at stp. il. Calculate AG for the reaction at stp. (b) 12 points] Using the bond dissociations values in the table below, calculate the AH for the reaction that convert haloalkane in...
6. Which of the following statements is not true? A) Bond breaking is endothermic. B) The bond dissociation energy for bond breaking is always negative. C) Bond making is exothermic. D) The bond dissociation energy for bond formation is always negative. 37. Using the bond dissociation energies given, calculate AH® for the following reaction. CH,CH -Br + H2O CH,CH-OH + HBr AH KJ/mol Bond A-B CH3CH2-Br H-OH сHCH-он H-Br A) +108 KJ/mol B) -130 KJ/mol C) -22 KJ/mol D) +22...
QUESTIONS Using Hooke's law, calculate the stretching frequency of a C-D bond if the stretching frequency of a C-H bond is 3040 cm-1 2030 cm-1 2130 cm-1 2230 cm-1 2330 cm-1 2430 cm-1
3. Acetylene is a linear molecule with the C-C bond length of 120.3 pm and C-H bond legth of 106.0 pm. The fundamental frequencies of the mormal modes are vi = 1975 cm , V2 = 3370 cm , v = 3277 cm , VA = 729 cm", and vg = 600 cm . The normal modes V and vg are doubly degenerate. (a) [7 points) Calculate the moment of intertia, rotational temperature and vibra- tional temperature of each normal...
C) The bond length is less than the sum of the two atomic radii. D) Breaking a covalent bond requires energy E) all of the above Answer 24. Draw the structural formula for acetylene, CHa, and state the type of bonds in an acetylene molecule. A) 3 single bonds B) 2 single bonds and I double bond C) 2 single bonds and 1 triple bond D) I single bond and 2 double bonds E) none of the above Answer 25....
The rate constant for a reaction that breaks a C-H bond in the rate-limiting step is about 8 times that for the same reaction if the hydrogen atom is replaced by a deuterium (D) atom. This phenomenon is called a primary kinetic isotope effect. From the information provided, determine how much larger the activation energy is for breaking the C-D bond. Be sure to specify any assumptions needed
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