ANS is B 10. Ethene (ethylene, C2H4) can dimerize to produce cyclobutane (C4H8) in the presence...
The initial equation is C4H8 -> 2 C2H4, (cyclobutane to ethylene), the initial temperature is 400k, the reaction is 1st order and the rate constant is .0736 If you start with .5M cyclobutane, how long will it take to produce .420M of the product, ethylene?
5. (40 pts) At 298 K, the standard enthalpies of formation for ethene C2H4 (8) and hexene C6H12 (1) are 227 kJ/mol and - 73 kJ/mol, respectively. 1) Calculate 4Hxn for CH 2 (1) 3 C2H4 (8) 2) Given C-H bond energy is 414 kJ/mol and C-C bond energy is 347 kJ/mol. Use the above equation and your calculated Arxº to estimate the C=C bond energy. 3) Both ethene and hexene can be used as fuels. Which compound would liberate...
49. Use the bo nd energies provided to estim C2H4(g)+H2g) C2H6g) Horxn ate Hrxn for the reaction below. Bond Bond Energy (kJimol) С-С 347 C-H 414 С С 611 С С 837 H-H 436 A)-128 k B) +98 kJ C) +700 k.J D) -102 kJ E) -166 k
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
For the reaction: H2(g)+C2H4(g)-->C2H6(g) Bond & Bond Enthalpy H-H 436.4 kJ/mole C-H 414 kJ/mol C-C 347 kJ/mol C=C 620 kJ/mol Substance & delta Hf H2 0 C2H4 52.3 C2H6 -84.7 (a) estimate the enthalpy of reaction, using the bond enthalpy values from the table in kJ/mol (b) Calculate the enthalpy of reaction, using standard enthalpies of formation
Ethylene oxide is produced by the catalytic oxidation of ethylene: C2H4 (g) + 1/2 O2 (g) --> C2H4O (g) An undesired competing reaction is the combustion of ethylene to CO2. The feed to a reactor contains 2 mol C2H4/mol O2. The conversion and yield in the reactor are respectively 25% and 0.70 mol C2H4O produced/mol C2H4 consumed. A multiple-unit process separates the reactor outlet stream components: C2H4 and O2 are recycled to the reactor, C2H4O is sold, and CO2 and...
3. (6 marks) An important industrial method for producing extremely pure ethanoic acid is the reaction of methanol with carbon monoxide. NOTE: Not all lone pairs are included in the structures below. o=0 H2C-OH + CO - > H2C-6-OH Calculate AH of this overall reaction in kJ/mol. The following table of bond energies may contain values to assist you. YOU MUST SHOW YOUR WORK TO GET CREDIT FOR THIS QUESTION. C-H 414 kJ/mol C-O 360 kJ/mol C-C 347 kJ/mol 0-0...
Can someone help 9) Ethylene, C2H,reacts with elemental halogens in the gas phase according to the following reaction to form 1,2-dihaloethanes: НН + X-X (g) HH (9) 1,2-dihaloethane, C2H2 Ethylene, C2H Elemental halogen Here, "X-X" is shorthand for Cl2. Br2.or 2 a) Use the enthalpies of formation and Third Law entropies in the table below to calculate Gibbs free energies of reaction for the formation of each dihaloethane. Although you're going to do 3the same calculation three times, you only...
5. Methanol gas combustion is represented with the following reaction 2 H3C-O-H(g) + 3 0=0(g) 20=C=O(g) + 4H-O-H(g) Calculate the AH x using the average bond dissociation energies from the table below, for 1 mole of methanol. Bond Energy kJ/mol Bond Energy kJ/mol Bond Energy kJ/mol Bond Bond 436 347 414 611 389 Bond C-C Сс Cc C-N CEN C-o H-H HC H- N H-O HS HF H-C1 HBr H- 837 305 615 891 8 565 163 418 946 222...
just 63 61. what is the H in kilokulesiMof so g water at 253 K becoming this matter at 253°C according to the specific heats above? Table l: Bond energies of relevant bonds 62. Which of the steps involved in the process of Question 61 above involves the largest A qsystem? Bond H-H Energy to break in kJ/mol) 432 a) ice warming b) ice melting c) water warming d) water becoming steam e) steam being warmed N-H C-H 391 413...