Homework Answers
As shown in the diagram, H1s and F2s orbitals are far apart in energy and they do not interact. Hence the molecular orbital (MO), 1σ is nonbonding. The 1π orbitals does not have right symmetry to interact with H1s orbitals and they are nonbonding electrons on F atom. Non-bonding electrons does not contribute in the bond order. Here 2σ is the bonding orbital and 3σ is the antibonding orbital. Hence bond order
=1/2(bonding electrons - antibonding electrons) = 1/2(2-0) = 1
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Calculate the bond order for HF .
30 Mainly H H1s Energy F2p ALA IT 26...
What is the bond order for HF? Is the HF molecule predicted to be paramagnetic or...
What is the bond order for HF? Is the HF molecule predicted to be paramagnetic or diamagnetic? Use the M0 diagram to predict where the electron density in the HF bond lies, closer to the H atom or closer to the F atom? Explain. Now draw the Lewis structure for H F.
26. For a 0.5M solution of HF (pKa= 3.45), what is the [H']? The pH? The...
26. For a 0.5M solution of HF (pKa= 3.45), what is the [H']? The pH? The [OH1? The РОН? 27. What are the K, and pK, values for F (see relevant info above)? VaFHSO.
Calculate the bond dissociation energy 2 HF + CO2COF2 + H2O , using table We were...
Calculate the bond dissociation energy
2 HF + CO2COF2
+ H2O , using table
We were unable to transcribe this imageTable 8.7 Some Average Single- and Multiple-Bond Lengths in Picometers (pm)* SINGLE BOND LENGTHS GROUP 1A 4A 5A 6A ZA 4A 5A 6A ZA ZA | H I Nor I si Isa | Br 74 110 9894 145 138 132 127 142 ZA | 161 154 147 143 141 194 187 181 176 191 210 140136 1 134 187 180...
Draw the MO energy level diagrams for N2, N2+, and N2- Calculate the bond order for...
Draw the MO energy level diagrams for N2, N2+, and N2- Calculate the bond order for each. Which has the shortest bond? Which is/are paramagnetic? Draw the MO energy level diagram for O2- and calculate its bond order.
The average C - H bond energy in CH4 is 415 kJ / mol. Use the following data to calculate the average C - H bond energ...
The average C - H bond energy in CH4 is 415 kJ / mol. Use the following data to calculate the average C - H bond energy in ethane ( C2H6;C - C bond ) , in ethane ( C2H4;C C bond ) , and in ethyne ( C2H2;C C bond ) . C2H6 ( g ) + H2 ( g ) rightarrow 2CH4 ( g ) delta H*rxn = - 65.07 kj / mol C2H4 ( g ) +...
HF has a bond length of 92 pm. Calculate the moment of inertia of the molecule...
HF has a bond length of 92 pm. Calculate the moment of inertia of the molecule and hence the energy required to excite it from the J = 0 to the J = 1 energy level. (a) At what temperature does this energy equal the thermal energy kT? (b) At what wavelength could this excitation be induced using electromagnetic radiation? please help!!! Please write out all the explanations where you see fit :)
Calculate deltaG for the dissociation of HF (K_a = 7.2 times 10^-4 at 25degreeC) if [HF]...
Calculate deltaG for the dissociation of HF (K_a = 7.2 times 10^-4 at 25degreeC) if [HF] = [H^+] = [F^-] = 1.0 times 10^-5 M and determine which direction the reaction shifts (if any) to reach equilibrium.
Using the table of bond energies below, calculate the following enthalpy values associated with this reaction:...
Using the table of bond energies below, calculate the following enthalpy values associated with this reaction: 2 HF (g) H2 (g)F2 (g) Bond type Bond Energy (kJ/mol) 159 F-F H-H 432 H-F 565 Enter your answers to zero decimal places. Ignore significant figure rules. Include negative signs if necessary What is the sum of the reactant bond enthalpies? kJ What is the sum of the product bond enthalpies? kJ What is the overall enthalpy of reaction? kJ
1. a. Use the bond energy data provided to calculate AH.. for the following reaction. H-H...
1. a. Use the bond energy data provided to calculate AH.. for the following reaction. H-H + Cl-Cl → 2 H-CI Bond Bond Energy H-H 436 kJ/mol Cl-CI 243 kJ/mol H-CI 431 kJ/mol b. Based on your answer to part a, is the reaction an exothermic reaction or an endothermic reaction? Provide a brief explanation to support you choice of answer. An endothermic reaction occurs in a cylinder with initial volume of 1 L. 5 kJ of heat is transferred...
From the following data, calculate the average bond energy for the N-H bond NH3(g) ? NH2(g)...
From the following data, calculate the average bond energy for the N-H bond NH3(g) ? NH2(g) + H(g) ?H° = 435 kJ NH2(g) ? NH(g) + H(g) ?H° = 381 kJ NH(g) ? N(g) + H(g) ?H° = 360 kJ
What is the bond order for HF? Is the HF molecule predicted to be paramagnetic or diamagnetic? Use the M0 diagram to predict where the electron density in the HF bond lies, closer to the H atom or closer to the F atom? Explain. Now draw the Lewis structure for H F.
26. For a 0.5M solution of HF (pKa= 3.45), what is the [H']? The pH? The [OH1? The РОН? 27. What are the K, and pK, values for F (see relevant info above)? VaFHSO.
Calculate the bond dissociation energy
2 HF + CO2COF2
+ H2O , using table
We were unable to transcribe this imageTable 8.7 Some Average Single- and Multiple-Bond Lengths in Picometers (pm)* SINGLE BOND LENGTHS GROUP 1A 4A 5A 6A ZA 4A 5A 6A ZA ZA | H I Nor I si Isa | Br 74 110 9894 145 138 132 127 142 ZA | 161 154 147 143 141 194 187 181 176 191 210 140136 1 134 187 180...
The average C - H bond energy in CH4 is 415 kJ / mol. Use the following data to calculate the average C - H bond energy in ethane ( C2H6;C - C bond ) , in ethane ( C2H4;C C bond ) , and in ethyne ( C2H2;C C bond ) . C2H6 ( g ) + H2 ( g ) rightarrow 2CH4 ( g ) delta H*rxn = - 65.07 kj / mol C2H4 ( g ) +...
Calculate deltaG for the dissociation of HF (K_a = 7.2 times 10^-4 at 25degreeC) if [HF] = [H^+] = [F^-] = 1.0 times 10^-5 M and determine which direction the reaction shifts (if any) to reach equilibrium.
Using the table of bond energies below, calculate the following enthalpy values associated with this reaction: 2 HF (g) H2 (g)F2 (g) Bond type Bond Energy (kJ/mol) 159 F-F H-H 432 H-F 565 Enter your answers to zero decimal places. Ignore significant figure rules. Include negative signs if necessary What is the sum of the reactant bond enthalpies? kJ What is the sum of the product bond enthalpies? kJ What is the overall enthalpy of reaction? kJ
1. a. Use the bond energy data provided to calculate AH.. for the following reaction. H-H + Cl-Cl → 2 H-CI Bond Bond Energy H-H 436 kJ/mol Cl-CI 243 kJ/mol H-CI 431 kJ/mol b. Based on your answer to part a, is the reaction an exothermic reaction or an endothermic reaction? Provide a brief explanation to support you choice of answer. An endothermic reaction occurs in a cylinder with initial volume of 1 L. 5 kJ of heat is transferred...
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