Which of the following processes have a AS>0?A)CH₂OH(1) → CH₂OH(s)B)N2(g) + 3H2(g) → 2NH (g)c)CH2(g) + H2O(g) → CO(g) + 3H2(g)D) Na2CO3(s) + H2O(g) + CO2(g) →2NaHCO3(s)E)All of the above processes have a positive value for AS Consider a reaction that has a negative AH and a positive AS. Which of the following statements istrue?A) This reaction will be spontaneous only at high temperatures.B)This reaction will be spontaneous at all temperatures.c)This reaction will be nonspontaneous at all temperatures.D)This reaction will be nonspontaneous only at high temperatures.E)It is not possible to determine without more information.If solid barium hydroxide octahydrate is mixed in a beaker with solid ammonium chloride, they reachighly endothermic process that absorbs so much heat from the surroundings that water on the outthe beaker freezes:This reaction is:Ba(OH)2*8H2O(s) + 2NH4Cl(s) → BaCl2(aq) + 2NH3(g) + 10 H₂O(1)A) Never spontaneousB) Always spontaneousC) Spontaneous because of the large increase in entropy

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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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H2 (g) + Cl2 (g) –→ 2 HCI (g) Using the following information, calculate AHrxn for the reaction above: NH3 (g) + HCI (g) → NH,CI (s) AHxn = -176 kJ/mol N2 (g) + 4 H2 (9) + Cl2 (g) → 2 NH,CI (s) AHxn = -628 kJ/mol | NH3 (g) → 1/2 N2 (g) + 3/2 H2 (g) AHxn= 46 kJ/mol number or fraction only kJ/mol
A student performs the woosh demonstration with ethanol instead of isopropyl alcohol. 40 cm3 of ethanol (C2H5OH) burns out of the bottle during the demo. density of ethanol = 0.78 g/mL ΔHf° C2H5OH(l) = -277.1 kJ/mol ΔHf° H2O(l) = -285.8 kJ/mol ΔHf° CO2(l) = -393.5 kJ/mol I need 25 distinct facts about this statement/reaction
Calculate the ΔH for the target reaction below using the three equations listed. Rewrite the three equations so that they add to give the reaction below Target: CS2(l) + 3O2(g) --> CO2(g) + 2SO2(g) ΔH = ? C(s) + O2(g) --> CO2(g) ΔH = -393.5 kJ S(s) + O2(g) --> SO2(g) ΔH = -296.8 kJ C(s) + 2S(s) --> CS2(l) ΔH = 87.9 kJ Enter ΔH for the top equation in Kj. (Your answer should have one digit after the decimal)
2) Determine the Sign of Ds for each of the following reactions a) CH₂(g) + 20₂(g) → 2H₂0 (1) + CO₂(g) b) 2 C 2 H 6 (g) + 70₂(g) → 6H₂0 (1) +4 (0₂ (9) c) Ca(OH)₂ (s) → (90) + H₂0 (1)
26. From the following information, determine AS° for the following: N(g) + O(g) NO(g) AS°=? > N2(g) + O2(g) → 2NO(g) AS°=24.8 J/K N2(g) 2N(g) AS°=115.0 J/K O2(g) 20(g) AS°=117.0 J/K
How many of the following processes have a AS > 0? . СНЗОН() — СH3ОH(S) N2(g) + 3 H2(g) → 2 NH3(g) • CH4(g) + H20(g) → CO(g) + 3 H2(g) • Na2CO3(s) + H2O(g) + CO2(g) → 2 NaHCO3(s) • KBRO3(s) →K+(aq) + BrO3"(aq) • 2NH4NO3(s) → 2N2(g) + O2(g) + 4H2O(g)
2.3 Consider the following reactions at 298 K. 2 03(g) →3 02(g) O2(g) → 2 0(g) NO(g) +03(g) →→ NO₂(g) + O₂(g) A,H=-427.0 kJ/mol Aat H = 495.0 kJ/mol AH = -199.0 kJ/mol Apply Hess's law to calculate the standard reaction enthalpy for the reaction NO(g)+O(g) → NO₂(g)
Part A Which of the following processes has a ASsys > 0? OCH4(g) + H₂O(g) → CO(g) + 3 H₂(g) CO₂(1)→ CO₂ (s) Li₂CO3(s) + H₂O(g) + CO₂(g) → 2 LIHCO3(s) N₂(g) + 3 H₂(g) → 2 NH3(g) All of the above processes have a AS > 0. Submit Provide Feedback Request Answer
Calculate AHrxn for the reaction below. 2 NOCI(g) → N2(g) + 02(g) + Cl2(9) You are given the following set of reactions. 1/2 N2(g) + 1/2 02(g) → NO(g) AH = 90.30 k) NO(g) + 1/2 Cl2(g) → NOCI(g) AH = -38.6 kJ 4.0 kJ
Hess's Law Given the following data: 4C(s) + 3H2(g) + 1/2O2(g) → HCOC(CH2)(CH3)(l) ΔH°=-139.0 kJ CH3CH2OH(l) + 1/2O2(g) → CH3CHO(l) + H2O(l) ΔH°=-204.0 kJ 2C(s) + 3H2(g) + 1/2O2(g) → CH3CH2OH(l) ΔH°=-278.0 kJ H2(g) + 1/2O2(g) → H2O(l) ΔH°=-286.0 kJ calculate ΔH° for the reaction:2CH3CHO(l) → HCOC(CH2)(CH3)(l) + H2O(l)
Calculate H0rxn for each of the following using data from Appendix B. (a) 2 H2S(g) + 3 O2(g) 2 SO2(g) + 2 H2O(g) (b) C2H6(g) + O2(g) CO2(g) + H2O(g) [unbalanced](kJ)
nts 11.3 d 26 Given the following reactions, what is the overall enthalpy change for this reaction? B₂0₂0) + 6H₂(→→B₂H₂ + 3H₂O) Reaction 480)+30→28,0,0) 280)+38₂)→₂1₂0 là Hy + OH,90 O 1146.4 kJ O 2024.0 kJ O 815.0 kJ O 573.2 kJ O 1871.8 kJ AH° (kJ) -2527.2 35.0 -483.6

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