Consider the reaction of the compound AB(s) with oxygen gas: 5 Olg) 2 AO3(g) 2 BO(g) +] 2 AB(s) Calculate the standard enthalpy change for this reaction given the following data. Compound AH Compound AH°; -45.3 kJ/mol AO3(g) BO2(g) AB(s) <-80.4 kJ/mol -52.3 kJ/mol O -34.4 kJ O 34.4 kJ O-356.0 kJ O 356.0 kJ O 174.8 kJ • Preious

Consider the reaction of the compound AB(s) with oxygen gas: 5 Olg) 2 AO3(g) 2 BO(g) +] 2 AB(s) Calculate the standard enthalpy change for this reaction given the following data. Compound AH Compound AH°; -45.3 kJ/mol AO3(g) BO2(g) AB(s) <-80.4 kJ/mol -52.3 kJ/mol O -34.4 kJ O 34.4 kJ O-356.0 kJ O 356.0 kJ O 174.8 kJ • Preious

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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A scientist measures the standard enthalpy change for the following reaction to be 6.7 kJ : CO(g) + H,O(1)–CO;{g) + H2(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of CO(g) is kJ/mol.
Find the enthalpy change for the reaction below, given the following reactions and their respective ΔHrxn values: PCl5(g) → PCl3(g) + Cl2(g) ΔH-? P4(s) + 6Cl2(g) → 4PCl3(g) ΔH = -2439 kJP4(s) + 10Cl 2(g) → 4PCl5(g) ΔH = -3438 kJ(A) 1490 kJ (B) 249.8kJ (C) 372.5 (D) none of those. If so, what is your answer?
(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
Substance AH (kJ/mol) MgCl2(aq) -785.1 kJ/mol HCl(aq) -167.2 kJ/mol Given the enthalpy of formation data in the table, what is the enthalpy of reaction for the reaction you performed in this lab? To calculate the enthalpy of reaction, use the following formula. AHrxn =ΣAH(products) - ΣAH; (reactants) Note that you will need the balanced chemical equation for the reaction performed in the lab. Also, note that AH; for the standard state elements is 0 kJ/mol. AHrxn = Is the calculated result simliar to the experimentally determined result? yes no kJ/mol
A scientist measures the standard enthalpy change for the following reaction to be -876.7 kJ :2NH3(g) + 3 N2O(g)4N2(g) + 3 H2O(g)Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of NH3(g) is kJ/mol.
Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H₂(g) →C₂H₂(g) AH = -125.6 kJ (2) C₂H₂(g)2C(s) + H₂(g) AH = -226.7 kJ what is the standard enthalpy change for the reaction: (3) 2C₂H₂(g) + 3H₂(g)-CH₁0(g) AH° = ?
Given the standard enthalpy changes for the following two reactions: (1) 2C(s) + 2H2(g) C2H4(g) AH° = 52.3 kJ (2) 2C(s) + 3H2(g) C2H6(g) AH° = -84.7 kJ what is the standard enthalpy change for the reaction: (3) C2H4(g) + H2(g) C2H6(g) AH° = ? kJ
enon 19 of 23 For the chemical reaction Ca (s) + % O2 (g) What is the enthalpy for the reaction 2 CaO (s) → 2 Ca (s) + O2 (g)? CaO (s) AH° = -635 kJ/mol.
The combustion of propanal (C3H6O; 58.079 g/mol) is studied in a bomb calorime an experiment in which the volume does not change. The heat of combustion as measured in this calorimetry experiment is found to be -26.20 kJ/g of propanal at 298 K. What is the molar enthalpy of combustion for this reaction? C3H6O(l) + 4 O₂(g) → 3 CO₂(g) + 3 H₂O(l) -> -1519.2 kJ/mol -1524.1 kJ/mol -1521.7 kJ/mol O-26.20 kJ/mol -1525.4 kJ/mol -1526.7 kJ/mol
Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) + O2(g)–→2N¡O(s) AH° = -479.4 kJ (2) 2Hg(1) + O2(g) 2H9O(s) AH° = -181.6 kJ what is the standard enthalpy change for the reaction: (3) NiO(s) + Hg()–Ni(s) + HgO(s) AH° = ? kJ
Using standard heats of formation, calculate the standard enthalpy change for the following reaction. 2HBr(g) + Cl₂(g) → 2HCl(g) + Br₂(g) AH (HBr(g)) = -36.3 kJ/mol AH (Cl₂ (9)) = 0.0 kJ/mol AH (HCl(g)) = -92.3 kJ/mol AH (Br₂ (9)) = 30.9 kJ/mol AH rxn = kJ