Question 23 14 points) 1. Calculate the change in enthalpy for the following reaction, using the...
Calculate the enthalpy of each propagation step and the total enthalpy of reaction for the following transformation. A table of bond dissociation energies is provided for reference. Do not include units in your answer. For example, if the answer is positive one hundred kilojoules per mole, write "+100" only. ∆HP1 = ∆HP2 = ∆HP = Average Bond Dissociation Energies, D (kJ mol) Br-Br 193 R2C-CR2 262 (π bond) H-Br 369 C-H 420 C-O 350 C-C 350 C-Br 285 O-o 180...
1. using the bond energies in the tables provided determine the approximate enthalpy change for the following reactions. Make sure to use the balanced reaction 1. CH3OH + 2O2 —> CO2 + 2H2O 2. H2 + Cl2 —> 2HC Bond Energies (kJ/mol) Bond Bond Energy Bond Bond Energy Bond Bond Energy H-H 436 C-S 260 F-CI 255 H-C 415 C-CI 330 F-Br 235 H-N 390 C-Br 275 Si-Si 230 H-O 464 C-1 240 Si-P 215 H-F 569 N-N 160 Si-S...
Calculate the enthalpy for the reaction below using the following bond dissociation energies. • H-H 436 kJ/mol O-H 460 kJ/mol 0-0 180 kJ/mol • 0=0 498 kJ/mol H -774 kJ/mol -654 kJ/mol 654 kJ/mol 774 kJ/mol
The enthalpy change for the following reaction is 95.4 kJ. Using bond energies, estimate the N-H bond energy in N2H4(g). N2(g) + 2H2(g) N2H4(g) kJ/mol The enthalpy change for the following reaction is -92.2 kJ. Using bond energies, estimate the H-H bond energy in H2(g). 2NH3(g) N2(g) + 3H2(g) kJ/mol D Single Bonds Multiple Bonds C N O F Si P S a Br 1 H 436 413 391 463 565 318 322 347 C 413 346 305 358 485...
.The enthalpy change for the following reaction is -137 kJ. The enthalpy change for the following reaction is -137 kJ. C2H4(g) + H2(g) -> C2H6(g) To analyze the reaction, first draw Lewis structures for all reactant and product molecules. Estimate the C-C bond energy in C2H6(g) , using tabulated bond energies (linked above) for the remaining bonds H C N O F Si P S Cl Br I H 436 413 391 463 565 318 322 347 432 366 299...
Question 2 4 pts Use the given average bond dissociation energies (BDE) to estimate A Hreaction for the combustion of hydrogen in oxygen that produces water: 2H2 (8) + O26 --> 2H20 (6) Bond BDE(kJ/mol) H-H 436 0-0 498 H-O 460
Estimate the enthalpy change for the following reaction : H2(g) + C2H4(g) -------> C2H6(g), given the following bond energies: BE(H-H) = 436 kJ/mol; BE(C-H) = 414 kJ/mol; BE(C-C) = 347 kJ/mol; BE(C=C) = 620 kJ/mol. A. -119 kJ B. +119 kJ C. -392 kJ D. +392 kJ E. none of the above
the enthalpy change in a chemical reaction can be determined using bond energies. energy must be added or absorbed to break bonds and that energy is released when bonds are formed. therefore ,you can calculate the total enthalpy of the reaction using following formula: dH= bonds broken-bonds formed Using bond energies, calculate the change in energy that accompanies the following reaction: H2 + O2 -> 2H2O Bond Bond Energy H-H 432 kJ/mol O-O 498 kJ/mol H-O 467 kJ/mol
Question 1 - Enthalpy of Combustion - Level 3 0/2 points What is the enthalpy change when 1.0 mol of propane, C3H8(8), is combusted? How about if the gas in the balloon is combusted? Start by writing a balanced equation for the combustion reaction of your given gas. Then use the bond energy values on your equation sheet to answer this question. ΔΗ, comb -2221 kJ/molgus AH xn for the balloon 1 kJ Evaluate Your estimated enthalpy of combustion is...
Using bond enthalpies given in the following table, determine the change in enthalpy (H) for the decomposition of 2 moles of ammonia in the gas phase to its constituent elements. Show your work. 2NH3(g)-->N2(g)+3H2(g) Question 16 (4 points) Using bond enthalpies given in the following table, determine the change in enthalpy (H) for the decomposition of 2 moles of ammonia in the gas phase to its constituent elements. Show your work. 2 NH3(g) >N2(g) + 3 H2(g) Bond Bond enthalpy...