Substance O2(g) PC1(e) POC13(g) AH (KJ/mol) S (J/mol.K) 205.5 273.1 325.5 0 -319.7 -558.5 25 =: Consider the reaction, 2POCl) → 2PCI(g) + O2(g), using the data in the table. Calculate AG of the nction. ( Vi invite le to

Substance O2(g) PC1(e) POC13(g) AH (KJ/mol) S (J/mol.K) 205.5 273.1 325.5 0 -319.7 -558.5 25 =: Consider the reaction, 2POCl) → 2PCI(g) + O2(g), using the data in the table. Calculate AG of the nction. ( Vi invite le to

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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Calculate how much heat is released or absorbed
Be sure to answer all parts. Consider the following balanced thermochemical equation for the decomposition of the mineral magnesite: MgCO,)MgO)+ CO,) AH-117.3 J (a) Is heat absorbed or released in the reaction? absorbed released (b) What is AH for the reverse reaction? kJ (e) What is AH when 5.20 mol of CO, reacts with excess Mg0? kJ (d) What is AH when 32.5 g of CO, reacts with excess Mg0? kJ
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For the reaction |C(s,graphite) + O(g) CO2(g) |AG° = -394.4 kJ and AS° = 2.9 J/K at 315 K and 1 atm. This reaction is (reactant, product) | favored under standard conditions at 315 K. The standard enthalpy change for the reaction of 2.03 moles of C(s,graphite) at this temperature would be kJ.
Calculate the enthalpy change using the net ionic equation for the given neutralization reaction at 25 °C. The values of AH; can be found in the Thermodynamic Properties at 298 K table. BaBr₂(aq) + 2H₂O(1) Ba(OH)₂ (aq) + 2 HBr(aq) - - AH: neutralization 57.11 Incorrect kJ
For the following reaction 2NO2(g) = N204(g) AH° = -58.02 kJ/mol and AS° = -176.6 J/mol·K. What is AG %D for the reaction at 40.0°C when P_NO2 = P_N2O4 = 0.200 atm? Assume AH° and AS° are temperature independent. t: tr kJ/mol
9) The following thermochemical equation is for the reaction of ammonia(g) with oxygen(g) to form nitrogen monoxide(g) and water(g): 4 NH3(g) + 5 O₂(g) → 4 NO(g) + 6 H₂O(g) 8100.0 25228 AH = -905 kJ 2730.0 How many grams of NH3(g) would have to react with excess O₂(g) to produce 58.6 kJ of energy?
Calculate the AH°, for the reaction below, in kJ, using the heat of formation values below: _X4Y2 (g) + Z, (g)→ --_X2Z4 (g) + LY4Z2 () AH°; [X4Y2 (g)] = -300.5 kJ/mol AH°; [Z, (g)] = O k//mol AH°; [X2Z4 (g)] = -110.4 kJ/mol AH°; [Y4Z2 (] = 278.9 kJ/mol %3D HINT: Balance the reaction FIRST!
3.) Consider the reaction below. Reaction: AH°r (kJ/mole) 2 ICI (£) 17.78 L. (g) 247.551 l16.135 223.066 (/mole K) Which explains the outcome when 0.45 mol ½, 0.45 mol Cl2, and 2.42 mol ICl are added to a 2.0L flask at 25°C? A. [ICI] decreases B. [ICI] increases C. both [b] and [CL] increase D. at equilibrium Keywords: reaction quotient (Q), initial concentration(s), equilibrium concentration(s), equilibrium constant, forward reaction, reverse reaction, Q K. Q= K Concepts: Reaction Quotient, Chemical equilibrium
From the enthalpies of reaction 2C(s) + O2 (9) → 2C0(g) 2C(s) + O2 (9) + 4H2 (g) → 2CH3 OH(g) AH ΔΗ :-221.0kJ %3| :-402.4kJ calculate AH for the reaction CO(g) + 2H2 (g) → CH3 OH(g) Express your answer to three significant figures with the appropriate units.
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