Give Up? Resources 9.4% ore: Hint f8 Given that AH [CI(g)] = 121.3 kJ-mol1 f. AH [C(g)] = 716.7 kJ-mol 1 AH CCI, (g)] = -95.7 kJ-mol ! calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCl, molecule. ДНо CI kJ mol Question Source: MRG-General Chemistry about us privacy policy careers terms of use help contact us

Give Up? Resources 9.4% ore: Hint f8 Given that AH [CI(g)] = 121.3 kJ-mol1 f. AH [C(g)] = 716.7 kJ-mol 1 AH CCI, (g)] = -95.7 kJ-mol ! calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCl, molecule. ДНо CI kJ mol Question Source: MRG-General Chemistry about us privacy policy careers terms of use help contact us

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Use average bond energies (table in the hint) to compare the stabilities of ethanol, C2H5OH, and dimethyl ether, (CH3)20, which have the same empirical formula, C,H¿O (all the bonds are single bonds). Based on average bond energies, is more stable by i kJ/mol. dimethyl ether eTextbook and Media ethanol
Use the molar bond enthalpy data in the table to estimate Average molar bond enthalpies. (Hpond) the value of AHan for the equation Bond kJ. mol-1 Bond kJ. mol-1 CCI, (g) + 2F, (8) → CF,(g) + 2 CL,(g) O-H 464 C=N 890 0-0 142 N-H 390 The bonding in the molecules is shown. С-О 351 N-N 159 O=0 502 N=N 418 C=0 730 N=N 945 C CI С-С 347 F-F 155 C=C 615 Cl-CI 243 C=C 811 Br-Br 192 С-Н 414 H-H 435 C-F 439 H-F 565 C-Cl 331 H-CI 431 C-Br 276 H-Br 368 C-N 293 H-S 364 C=N | 615 S-S 225
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Consider the following reactions: AH = -393.5 kJ + O2(g) CO 2(9) (graphite) AH = -285.8 k) + V2 O2(g) H2(9) AH = -726.4 k CH,OH + 3/2 0, CO2(9) + 2H,0) (1) Choose... Calculate the enthalpy change for the following reaction: CH;OH) (graphite) + 2 H2(g) + 2 02
You are given the following average bond energies:H-H 436 kJ/molH-X 431 kJ/molH-C 414 kJ/molC-X 339 kJ/molX-X 243 kJ/molBalance the following chemical reaction and compute the estimated heat of reaction using the values above.CH4(g) + X2(g) → CH1X3(g) + HX (g)
2. Calculate the heat evolved by 4.5 g of propane from the equation C, He + 502 3CO2 + 4 H,O From the following data AH in kJ/mol C3 H = - 2043 CO = - 393.5 %3D H,O = - 255.83 %D
Calculate the standard enthalpy change for the reaction 2CgHial) - 1702ig) – 16COg) + 18H200- Given 2C;H1s1)+ 250;(g) 16CO:(g) + 18H;O(1) AH-11,020 kJ/mol 2Co0g) + O:g) 2CO2(g) AH° --566.0 kJ/mol Multple Choice -10.450 kimol -6.492 kimol O 15.550 kmol 10.460 kimol O 6,492 kJimel
! 1 Q :0 F1 Calculate the enthalpy of the reaction below (AHrxn, in kJ) using the bond energies provided. 2 H₂(g) + O₂(g) → 2 H₂O(g). 482 133,809 (a 2 W F2 # 3 E Single Bond M Multiple Bonds I U ZO 80 F3 602 C=O 799 835 C=O 1072 C=N 615 O=O 494 C=N 887 N=N 942 **All values in kJ/mol** oc: 7 11 $ 4 H 432 411 346 386 305 167 459 C=C C=C O CNO a F4 358 201 142 SD F % 5 tv 0 F5 6 Q G F6 NA & 7 F7 G H 33611 RTY U * 8 W F8 ( 9 F9
Use the molar bond enthalpy data in the table to estimate Average molar bond enthalpies. (Hpond) the value of AHn for the equation Bond kJ - mol-1 Bond kJ - mol-1 CCI, (g) + 2F, (g) CF,(g) + 2Cl, (g) O-H 464 C=N 890 The bonding in the molecules is shown. 0-0 142 N-H 390 С-О 351 N-N 159 CICI O=0 502 N=N 418 + C CI C=0 730 N=N 945 F-F С-С 347 F-F 155 C=C 615 Cl-CI 243 C=C 811 Br-Br 192 С-Н 414 Н-Н 435 C-F 439 Н-F 565 C-CI 331 Н-С 431 C-Br 276 Н-Br 368 C-N 293 H-S 364 C=N 615 S-S 225
6. Calculate the AH for the reaction: 7. CS2 (1) + 2 O2 (g) → CO2 (g) + 2 SO2 (g) Given: AHCO2 (g) = - 393.5 kJ/mol; AHSO2 = -296.8 kJ/mol; %3D AHCS2 (1) = 87.9kJ/mol
2. Acetylene is commonly used in welding torches and is known for burning very hot. Given the heats of formation in the table below, calculate the heat of combustion of acetylene in excess oxygen. Substance C₂H2 H₂O CO₂ Standard Heat of Formation +226.7 kJ/mol -285.8 kJ/mol -393.509 a. Find the heat of combustion of one mole of acetylene in oxygen: C₂H2 + 5/2 02 ----> 2CO₂+ H₂O b. An acetylene tank, like many others of gas we use in the lab, is often pressurized. If a 4L tank containing pure acetylene at 298 K is pressurized to 10 atm, how much heat will be released if a welder burns all of it on a single job?