Using the appropriate electron affinities and ionization energies, estimate the enthalpy of reaction and state which one is most exothermic for the following reactions. Part A K(g) + O(g) → K+ (g) + O¯(g) Express the enthalpy in kilojoules per mole as an integer. ΤΙ ΑΣΦ Submit Part B Request Answer ? kJ.mol-1 Cs(g) + Cl(g) → Cs+ (g) + Cl¯ (g) Express the enthalpy in kilojoules per mole as an integer.

Using the appropriate electron affinities and ionization energies, estimate the enthalpy of reaction and state which one is most exothermic for the following reactions. Part A K(g) + O(g) → K+ (g) + O¯(g) Express the enthalpy in kilojoules per mole as an integer. ΤΙ ΑΣΦ Submit Part B Request Answer ? kJ.mol-1 Cs(g) + Cl(g) → Cs+ (g) + Cl¯ (g) Express the enthalpy in kilojoules per mole as an integer.

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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nuraipy changes in chemical reactions Read through pages 18-20 in your laboratory manual for information on how to calculate the enthalpy change in a solution. Part A - Calculating ms In a calorimetry experiment 5.6 g of potassium hydroxide is dissolved in 400 mL water in a thermos flask. The temperature increase in the solution is 7 °C. The effective mass of the glass in the thermos flask (mcal) is 0.040 kg. The heat capacity of the solution (Cs) is 4.04 kJkg-¹K-1¹. The heat capacity of the calorimeter (Ccal) is 0.387 kJkg-¹K-1. Remember to enter your answer using the specified number of significant figures, but keep the entire number in your calculator for use in further calculations. Calculate the total mass of solution in kilograms (ms) Give your answer to four significant figures. ▾ View Available Hint(s) Hint 1. Calculating ms mg = mass water (kg) + mass solute (kg) —| ΑΣΦ Submit Request Answer ? kg < Pear 10
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Using the table of standard formation enthalpies that you'l find under the ALEKS Data tab, calculate the reaction enthalpy of this reaction conditions: C,H;OH(1)+3 0,(o)-2 CO(o)+3 H,om Round your answer to the nearest kJ.
(incorrect) Calculate the standard enthalpy of reaction for the following reaction using the appropriate standard enthalpies of formation AH [SiCl4 (g)] = -657.0 kJ/mol; Other relevant thermodynamic quantities can be found in the appendix at the end of the textbook. SiO₂ (s) + 4 HCI (g) → SiCl4 (g) + 2 H₂O(g) -104.2 kJ 104.2 kJ -137.2 kJ -139.3 kJ (Your answer) 139.3 kJ (Correct answer)
When 1.42 g of iron reacts with 1.80 g of chlorine, 3.22 g of iron(II) chloride (FeCl2, molar mass = 126.75 g/mol) and 6.8 kJ of heat is produced. What is the enthalpy change for the reaction when 1 mole of iron(II) chloride is produced? round to sig figs
3. Hydrazine, N2H4, is a colorless liquid used as a rocket fuel. What is the enthalpy change for the process in which hydrazine is formed from its elements? N2(g) + 2H2(g) → N2H4(l) Use the following reactions, enthalpy changes, and Hess’s Law N2H4(l) + O2(g) → N2(g) + 2H2O(l); ΔrH° = −622.2 kJ H2(g) + ½O2(g) → H2O(l); ΔrH° = −285.8 kJ
Given these reactions, where X represents a generic metal or metalloid 1) H, (g) + 0,(g) → H,0(g) AH1 = -241.8 kJ 2) X(s) + 2 Cl,(g) → XCl,(s) AH2 = +475.9 kJ 3) H,(g) + CL,(g) HCl(g) АНз 3 —92.3 kJ → 4) X(s) + O,(g) –→ XO,(s) AH4 = -748.7 kJ 5) Н, О(2) — н,00) AH5 = -44.0 kJ what is the enthalpy, AH, for this reaction? XCI, (8) + 2H,О() — ХО,(8) + 4 HCI(g)
Given the following reactions Reactions Enthalpies of Reaction 1 Na(s) + Cl2(8) → Na(g) + Cl(g) AH = 257 kJ 2 Na(g) + Cl(g) → Na*(g) + Cl(g) AH = 164 kJ 1 Cl2(g) → Nacl(s) Na(s) + AH = -333 kJ Use Hess' Law to determine the AH for the following reaction: (watch your states and charges) Na*(g) + Cl'(g) → NaCI(s) X kJ
Suppose that the reaction of 1.38 grams of X (MW = 56.76) consumes 6.82 x 104 joules of heat. What is the molar enthalpy of the reaction in kJ/mol? Report your answer to three decimal places (ignore significant figures).
Suppose that the reaction of 4.739 moles produces 32.43 kJ of heat. What is the molar enthalpy of che reaction in kJ/mol? Report your answer to three decimal places (ignore significant figures).
The following table contains some standard enthalpies of formation, AH, at 298 K. Substance diamond graphite carbon tetrachloride carbon tetrachloride carbon tetrafluoride methane carbon monoxide carbon dioxide chlorine gas Cl₂ (g) hydrochloric acid fluorine gas hydrofluoric acid hydrogen oxygen water water hydrogen peroxide hydrogen peroxide ΔΗ (kJ/mol) 1.88 Formula C(s) C(s) 0 CCl4 (g) -106.7 CC14 (1) -139.3 CF4 (g) CH4 (g) -74.8 CO(g) -110.5 -679.9 CO₂(g) -393.5 0 HCl(g) -92.30 F2 (g) 0 HF (g) -268.61 H₂(g) 0 O2 (g) 0 H₂O(g) -241.82 H₂O(1) -285.83 H₂O2(g) -136.10 H₂O2 (1) -187.8
When 3.8 g A are reacted with 8.5 g D, according to the balanced chemical equation below, 33 kJ of energy are released. Please calculate the enthalpy for this reaction when 3 moles of G are produced. 2A + 3D = 2Z + 3G given molar masses: A = 141.8 g/mole D = 63.996 g/ mole Z = 4.032 g/ mole G = 56.028 g/ mole