Given the reactionP,O10 (s) + H2O → H3 PO4 (aq)H20 → H3 P04 (aq)ΔΗ -96%3D.2 kJwhat the AH for P4010 (s) + 6 H2O → 4H3 PO4 (aq) be?O -384.8 kJO384.8 kJ192.4 kJO -192.4 kJ

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Answered: Given the reaction P,O10 (s) + H2O → H3…

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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(b) An aqueous solution of acetic acid can be prepared by the reaction of ethanol with oxygen : CH3CH2OH (1) + O2 (g) –→ CH3COOH (1) + H2O (1) Write thermochemical equations for enthalpy of formation of the given compounds and calculate AH for the reaction, given the following data. Enthalpy of formation, AHf (kJmol") -277.8 Compound CH;CH2OH (1) CH3COOH (I) H2O (1) -485.0 -286.0
Given the following data: FEE Conc. (M) Volume (mL) Tinitial (°C) Tfinal (°C) Solution NaOH 0.750 50.00 19.84 23.18 HCI 0.500 50.00 19.84 Calculate AH° for the reaction: HCl(aq) + NaOH(aq) H2O(1) + NaCl(aq) You may assume all solutions to have the same density and specific heat as water (1.00 g/mL and 4.184 J/g°C) kJ/mol
Q.29. Determine, at 298 K, AH, the standard enthalpy of the reaction (1) between dinitrogen tetraoxide and hydrazine: (1) N204 (g) + 2 N2H4 (1) → 3 N2 (g) + 4 H20 (g) Knowing the standard reaction enthalpies, at 298 K, of the following reactions: (2) NH3 (g) 1/2 N2 (g) + 3/2 H2 (g); A2H° - + 46,19 kJ. mol (3) N204 (g) 2 NO2 (g); AgH-+ 58,04 kJ. mol- (4) 2 NH3 (g) > N2H (I) + H2 (g) ; AraH° = + 142,80 kJ. mol- (5) 2 NO, (g) + 4 H2 (g) → N2 (g) + 4 Hz0 (g) ; AsH = - 1 033,66 kJ. mol-
The bombardier beetle uses an explosive discharge as a defensive measure. The chemical reaction involved is the oxidation of hydroquinone by hydrogen peroxide to produce quinone and water: CоHа (ОН)2 (ад) + H202(аg) — СөН, О2(ад) + 2H2О() Calculate AH for this reaction from the following data: CвНа (ОН)2(аq) — СеH4О2(ад) + H2(9) ДН — 177.4 kJ H2 (g) + O2 (g) → H2O2(ag) AH = -191.2 kJ H2 (g) + 02 (g) → H2O(g) AH = -241.8 kJ H2O(g) → H20(1) AH = -43.8 kJ ΔΗ kJ
4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(l), ΔH = -1530kJmol-1 (1) H2(g) + 1/2O2(g) → H2O(l), ΔH = -288 kJmol-1 (2) Construct an enthalpy cycle and calculate the enthalpy of formation of ammonia.
2. Calculating enthalpy: AH = -206 kJ mol¹¹, 3 Fe(s) + 2 O₂(g) → Fe3O4 (S) AH = -136 kJ mol-¹, a) Given 2Fe(s) + 1.5 O₂(g) → Fe₂O3 (S) determine AH, for the following reaction: 4Fe₂O3(s) + Fe(s) → 3Fe3O4 (s) Is this reaction exothermic or endothermic? Is this enough information to inform whether this reaction occurs or not? O b) Given AH vap of water at 373 K = 40.7 kJ mol¹¹, C₂(l)=75.2 J mol¹¹K²¹ and ₂(g)=33.6 J mol¹¹K²¹, calculate AHvap of water at 298 K.
The heat gained by the solution in reaction two is 5.3 kJ. how many moles of NaOH were consumed ? what was the enthalpy of reaction ? (In kJ/mole)
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
Q: 3 Define and elaborate the significance of Faraday’s law (first and second)?
15. Using the standard enthalpies of formation for the chemicals involved, calculate the enthalpy change for the following reaction. (Note: Show the math clearly and provide units in your setup) (AH; Values in kJ/mol are as follows: NO, +32, H,0 -286, HNO3 -207, NO +90) 3NO2(8) + H,Oy O 2HNO3(aq) + NO(g) (g),
Q.30. Determine, at 298 K, Δr1H0, the standard enthalpy of the reaction (1) between dinitrogen tetraoxide and hydrazine: (1) N2O4 (g) + 2 N2H4 (l) à 3 N2 (g) + 4 H2O (g) Knowing the standard reaction enthalpies, at 298 K, of the following reactions: (2) NH3 (g)à 1/2 N2 (g) + 3/2 H2 (g) ; Δr2H0 = + 46,19 kJ . mol–1 (3) N2O4 (g) à 2 NO2 (g) ; Δr3H0 = + 58,04 kJ . mol–1 (4) 2 NH3 (g) à N2H (l) + H2 (g) ; Δr4H0 = + 142,80 kJ . mol–1 (5) 2 NO2 (g) + 4 H2 (g) à N2 (g) + 4 H2O (g) ; Δr5H0 = – 1 033,66 kJ . mol–1

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Given the reaction P,O10 (s) + H2O → H3 PO4 (aq) ΔΗ -96 %3D .2 kJ what the AH for P4O10 (s) + 6 H2O → 4 H3 PO4 (aq) be?