The table below lists the average bond energies that you would need to determine reaction enthalpies.
Use bond energies to calculate AHrxn for the following reaction: 2 NO (g) + 5 H2 (g) → 2 NH3(g) + 2 H20 (g)
Enter your answer numerically, in terms of kJ and to three significant figures.
In reactants we have:
2 N triple O bond
5 H-H bond
In products we have:
6 N-H bond
4 O-H bond
So,
Delta H = BE(reactant) - BE(product)
= 2*BE(NO) + 5*BE(H-H) - 6*BE(N-H) - 4*BE(O-H)
= 2*631 + 5*436 - 6*389 - 4*464
= -748 KJ
Answer: -748 KJ
The table below lists the average bond energies that you would need to determine reaction enthalpies.
The table below lists the average bond energies that you would need to determine reaction enthalpies. Use bond energies to calculate the enthalpy of formation of NH3 in kJ/mol. Express your answer numerically, in terms of kJ/mol and to three significant figures.
The table below lists the average bond energies that you would need to determine reaction enthalpies. Use bond energies to calculate the enthalpy of combustion of one mole of methanol in kJ per mole methanol. Express your answer numerically, in terms of kJ/mol methanol and to three significant figures.
Enthalpy and Bond Strength The table below lists the average bond energies that you would need to determine reaction enthalpies. Use bond energies to calculate ΔHrxn for the following reaction: 2 NO (g) + 5 H2 (g) → 2 NH3 (g) + 2 H2O (g) Enter your answer numerically, in terms of kJ and to three significant figures.
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
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Using the bond enthalpies in the Average Bond Enthalpies table, determine the approximate enthalpy (in kJ) for each of the following reactions. (Assume the average bond enthalpy of the CI-F bond is 254 kJ/mol.) (a) C12(g) + 3 F2(9) ► 2 CIF3(9) -817 kJ (b) H_C=CHCH2(g) + H2(9) ► H,CCH, CH3(9) 476x kJ (c) CHz(C=O)CH3(g) + 402(9) ► 300,(9) + 3 H20(9) 127 X kJ Supporting Materials Periodic Table 1 Supplemental Data Constants and Factors Additional Materials eBook
Using the table of bond energies below, calculate the following enthalpy values associated with this reaction: CH4 (g) + 2O2(g) + CO2(g) + 2 H20 (g) Bond Energy (kJ/mol) 347 614 413 Bond type |C-c |C=C CH 0-0 O=O C-O C=O H-O 204 498 358 799 467 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? What is the sum of the product bond...
Question 6 0.5 pts The table below contains the bond dissociation energies for common bonds. 410 Dissociation energy Bond (kJ/mol) |C-c 350 CNC 611 C-H 350 (c=0 799 0-0 180 O=O 498 460 C-O H-o Calculate the bond dissociation energy required for breaking all the bonds in a mole of water molecules, H20. Express your answer numerically, in terms of kJ/mol, and to three significant figures.
Estimate AHrxn for the below chemical reaction using the provided bond enthalpies. The Lewis structures hydrogen peroxide (H2O2) is shown below. 2 H2O2 (g) → 2 H20 (g) + O2 (g) Bond Bond Enthalpy (kJ/mol) 0-0 O=0 495 H-O 463 Η-Η 436 146 : 0:1
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2. Use the following enthalpies of formation to calculate an approximate enthalpy of reaction, AHrxn for: (5 pts) C3H8 (g) + 502 (g) → 3CO2 (g) + 4 H20 (1) C(s) + O2 (g) - CO2 (g); AH = - 393.5 kJ/mol H2(g) + 42 02 (g) - H20 (1); AH = - 285.5 kJ/mol 3 C(s) + 4 H2(g) → C3H8 (g); AH r = - 103.8 kJ/mol