Bond kJ. mol-1 Bond kJ. mol- Use the molar bond enthalpy data in the table to estimate the value of AHan for the equation. O-H 464 C=N 890 О-о 142 N-H 390 NH, (g) + 20,(g) HNO,(g) + H,O(g) С-О 351 N-O 201 The bonding in the molecules is shown. O=0 502 N=N 418 C=0 730 N=O 607 С-С 347 F-F 155 C=C 615 Cl-Cl 243 C=C 811 Br-Br 192 С-Н 414 H-H 435 С-F 439 Н-F 565 C-Cl 331 H-Cl 431 С-Br 276 Н-Br 368 С-N 293 H-S 364 C=N 615 S-S 225 kJ-mol-! AHn = Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry | Publisher: Universi

Bond kJ. mol-1 Bond kJ. mol- Use the molar bond enthalpy data in the table to estimate the value of AHan for the equation. O-H 464 C=N 890 О-о 142 N-H 390 NH, (g) + 20,(g) HNO,(g) + H,O(g) С-О 351 N-O 201 The bonding in the molecules is shown. O=0 502 N=N 418 C=0 730 N=O 607 С-С 347 F-F 155 C=C 615 Cl-Cl 243 C=C 811 Br-Br 192 С-Н 414 H-H 435 С-F 439 Н-F 565 C-Cl 331 H-Cl 431 С-Br 276 Н-Br 368 С-N 293 H-S 364 C=N 615 S-S 225 kJ-mol-! AHn = Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemsitry | Publisher: Universi

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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The standard state of carbon is graphite. ΔH°f,diamond is +1.896 kJ/mol. Diamonds are normally weighed in units of carats, where 1 carat = 0.200 g Determine the standard enthalpy of the reaction for the conversion of a 3.61 -carat diamond into an equivalent mass of graphite.
The integrated circuits in your cell phone and computer are made from the semiconductor silicon. The silicon is obtained from a really inexpensive starting material, sand, which is primarily SiO2. One step in the purification of silicon is to separate it from solid impurities by forming the gas silicon tetrachloride. Given the following reactions, which are performed one at a time, what is the overall enthalpy change in converting 1.00 mol of silicon dioxide into pure silicon? Reaction AH (kJ) SIO2(s) + 2C(s) → Si(impure s) + 2C0(g) Si(impure s) + 2CI2(g) SICI4(g) + 2Mg(s) → 2M9CI2(s) + Si(s) +690 SICI4(g) -657 -625 Select one: a. +592 kJ b.-625 kJ C. +1,972 kJ d. -1,972 kJ e. -592 kJ
Using bond enthalpies in the table, estimate AH for the following gas-phase reactions. Average Bond Enthalpies (kJ/mol) Single Bonds C-H C-C C-N C-O C-F C-Cl C-Br C-I C-S 413 |N-H 348 |N-N 293 N-O 358 |N-F 485 |N-Cl 328 N-Br 243 276 240 259 CH–C1 242 193 Br-Br Multiple Bonds C=C C=C C=N C=N 614 839 615 391 O-H 0-0 163 201 O-F 272 O-Cl 200 O-I 201 463 146 190 203 234 339 H-H S-H 436 S-F 567 S-Cl 327 253 H-F H-Cl 431 S-Br 218 H-Br 366 S-S 266 H-I 299 |N=N 418 0=0 |N=N 941 |N=O 607 495 Part C Estimate AH for the reaction. Express your answer using one significant figure. AH = Submit —| ΑΣΦ Provide Feedback H H-N-N-H+CI-CI-2 H-N-CI -H+C₁_a_ Previous Answers Request Answer HH X Incorrect; Try Again; 3 attempts remaining ? kJ
The lattice energy is defined as the energy required to break one mole of an ionic solid into its ions in the gas phase. The lattice energy for calcium oxide corresponds to the following reaction. CaO(s) Ca2+(g) + O2-(g) DH = ? Using the following information, determine the lattice energy for calcium oxide. Ca(s) ----> Ca(g) DH = 178.2 kJ Ca(g) ----> Ca2+(g) + 2e- DH = 1747.9 kJ O2(g) ----> 2O(g) DH = 498.3 kJ O2-(g) ----> O(g) + 2e- DH = -702 kJ Ca(s) + 1⁄2 O2(g) ----> CaO(s) DH = -635.0 kJ Using the unrounded answer from the previous problem determine q (kJ) for the following reaction when 1.00 grams of solid calcium oxide forms. Ca2+(g) + O2-(g) ⟶⟶ CaO(s)
Consider the following Lewis structure and table of bond energies. What is the total sum of the bond energies in this molecule? Em H- :O: -C Ö-H H-H 436 H-F 569 H-Cl 432 H-Br 366 H-I 298 Table of Average Bond Energies (kJ/mole) C-H 410 C-C 350 C-N 300 C- O 350 C -F 450 C-Cl 330 C-Br 270 CII 240 N H N N 390 240 N-F 270 NCI 200 N-Br 240 200 N O 460 142 -F 180 200 220 01H 010 O O Cl 011 F-F 157 F-CI 251 F-Br 234 Cl-Cl Cl-Br Br-Br 1-1 1-Br -Cl 1 I-F 243 219 194 153 179 208 280 C=C C=0 C=N C-S 010 N=N N=0 C C C=0 CEN NEN 611 745 615 477 498 418 607 835 1077 891 941
Use bond enthalpies (Table 9.5 page 303) to estimate AH (kJ/mol) for the following gas-phase reaction. H H H. H+ C=C H,O H-C-C-H + | | OH H H. H Ethylene Water Ethanol
Food contains three main categories of compounds: carbohydrate, protein, and fat. Arctic explorers often eat a high-fat diet because fats have a high food value. The average food values for carbohydrate, protein, and fat are 4 Cal/g, 4 Cal/g, and 9 Cal/g, respectively. Consider a typical fat to have the chemical formula C18H36O2, glucose (C6H12O6) to be a representative carbohydrate, and the amino acid alanine (C3H6NO2) a building block of proteins. Express the food values given above in kJ/mol.
Calculate the enthalpy of reaction for the combustion reaction (in kJ/mol) shown below. Enter your answer without units. ннно: •. Н-С-С—С—С-Ӧ—Н + 50=0 4 0=c=o° + 4 Н—0—Н ннн Average Bond Energy Bond (kJ/mol) H-H 436 H-C 414 H-O 464 C-C 347 C=C 611 C-0 360 C=O 799 0-0 142 O=0 498 If you cannot see the images above,then click here
Use the data below to calculate the bond energy for a C-F bond in kJ/mol. Bond Energy (kJ/mol) С-Н 413 H-F 567 С-С 347 H-CI .431 F-F 159 H-Br 364 Cl-CI 243 H-I 297. Br-Br 193 I-I 151 The reaction shown below has AH = -3372 kJ as written C2H6lg) + 7 F2(g) → 2 CF4(g) + 6 HFig) In C2H6 each C makes 3 bonds with H and 1 bond with C 485 kJ/mol O 489 kJ/mol O -503 kJ/mol O none of the answers are correct
2. a. Determine the standard heat of formation, AH for the following reaction using the Data from the Table. C3H12 ) + 802(g) → 5CO2 + 6H₂O b. State whether the reaction is exothermic or endothermic. Explain. c. Rewrite the equation as thermochemical equations in two different ways to include the heat calculated in (2a). d. Draw a detail Energy Diagram representing the thermochemical equation in Ⓒ illustrating the the reactants and products and their positions.
Consider the following chemical reaction:C3H8(g) + H2(g) → C2H6(g) + CH4(g) ΔH° = ?Calculate the enthalpy change for the reaction above using Hess’s law.Thermochemical data:H2(g) + ½O2(g) → H2O(l) ΔH° = –285.8 kJΔH°combustion for CH4(g) ΔH° = –890.0 kJ/molCO2(g) → C(s, graphite) + O2(g) ΔH° = +393.5 kJΔH°combustion for C2H6(g) ΔH° = –1560.0 kJ/molΔH°f for C3H8(g) ΔH° = –103.8 kJ/mol
Use the molar bond enthalpy data in the table to estimate the value of AHin for the equation. rxn NH3(g) + 2O₂(g) → HNO3(g) + H₂O(g) The bonding in the molecules is shown. H AHixn = H O اس ای H + Bond O-H 0-0 C-O 0=0 C=O C-C C=C C=C C-H C-F C-Cl C-Br C-N C=N kJ. mol-¹ 464 142 351 502 730 347 615 811 414 439 331 276 293 615 Bond C=N N-H N-O N=N N=O F-F Cl-Cl Br-Br H-H H-F H-Cl H-Br H-S S-S kJ · mol-¹ 890 390 201 418 607 155 243 192 435 565 431 368 364 225 kJ.mol-¹