3) The molar heat of formation of NH&NO3 (s) is –367.54 kJ and those of N20 (g) and H20 (1)are 81.46 and -285.8 kJ respectively at 25 °C and 1 atmospheric pressure. Calculate AH,AS, and change in free energy of the reaction.NH,NO3(5) – N20o + H20m

Note: The reaction given is not balanced properly, the correct reaction is given as follows:…

Answered: 3) The molar heat of formation of…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Q4) a) Explain why AStusion and AS,aporizaton are always positive? b) Natural gas is composed of 90% methane (CHa). As a heat source, methane is burned under the stream of O2. This reaction, namely combustion reaction, is given as follows : CH:(g) + 202(g) → CO2(g) +2H20(1) According to this reaction find out AA°reaction and AG°reaction at 298 K. s° (CO.) = 213.8 J/mol.K ; S° (H2O) = 70.0 J/mol.K ; S° (CH2) = 183.6 J/mol.K; s° (02) = 205.2 J/mol.K; AH°reaction = -890 kJ/mol. Assume that all reactants and products behave as an ideal gase.
Show complete solutions. Round off final answers to 4 decimal places.
Show complete solution. Round everything to four decimal places and box all final answers. The molar heat of formation of NH4N03 (s) is -367.54 KJ and those of N20 (g) and H20 (1) are 81.46 and -285.8 KJ respectively at 25°C and 1 atmospheric pressure. Calculate delta H and delta U of reaction. NH4NO3(s) → N20(g) + H20(I)
The decomposition of crystalline N,O, N,0,(s) → 2NO,(g) + 0,(g) is an example of a reaction that is thermodynamically favored, even though it absorbs heat. At 25 °C we have the following values for the standard state enthalpy and free energy changes of the reaction: AH° = +109.6 kJ/mol AG° = -30.5 kJ/mol (a) Calculate AS° at 25 °C. (b) Why is the entropy change so favorable for this reaction?
Sublimation reaction of an acid hydrate is shown below. A.NH2O(k) → A(g)+ nH2O(g) For the reactions in which n=2 and 3 the A,G° and A,S° at 435 K are given in the following table. For these reactions compute the A,G° at 337 K. T= 435 K A,Gº (kJ mol²) A,Sº (kJ mol²K) in 2 109.5 0.539 3 174.2 0.655
Given the following reaction: CO(g) + H₂O(g) CO2(g) + H2(g) Kc = 1.87 at 700 °C If a student heated 0.8 mol each of CO(g) and H2O(g) in a 5 L flask at 700 Celsius, solve for the concentration of each component when equilibrium is reached.
8. Consider the following chemical reaction: 7 4 HBr(g) + O2(g) → 2 H20(g) + 2 Br2(g) Identify the substance oxidized (SO), the substance reduced (SR), the oxidizing agent (OA) and the reducing agent (RA). SO: SR: OA: RA:
If 240 mol/s CO is produced according to the following reaction equation: 2C4H10(g) + 13O2(g) → 8CO2(g) + 10H2O (l) Know that both reactants and products are at 25°C, and there is no CO2 in the stream input. Find the enthalpy change of the reaction?
On studying the reaction At T=25 °C:- 2A- →R_the following information are obtained: CAo (mol/lit) t1/2 (h) 0.1 0.3 1.386 1.386 While at T= 40°C gives:- t=0 h t=2h СА (mol/lit) CR (mol/lit) 0.5 0.232 At what temperature will the reaction has a half-life- time equal to 0.0981 h?
The standard Gibbs free energy change and (2) the equilibrium constant at 1 bar and 298 K for the ammonia synthesis reaction. N2g+3H2g _______ 2NH3g Given that the standard free energies of formation at 298 K for NH3 are -16.750 KJmol
2. Consider a voltaic cell at 25°C in which the following reaction takes place. 302g) + 4NO(g) + 2H,O → 4NO, (aq) + 4H*(aq) (a) Calculate E° for the cell (b) Calculate E under the following conditions: [NO3] = 0.750 M, PNo = 0.993 atm, Po. = 0.515 atm, pH = 2.85.
The free energy change for the following reaction at 25 °C, when [Co²+] = 1.15 M and [Cd²+] = 6.07×10 3 M, is -36.7 kJ: Co²+(1.15 M) + Cd(s)— Co(s) + Cd²+(6.07×10-³ M) AG = -36.7 kJ What is the cell potential for the reaction as written under these conditions? Answer: V Would this reaction be spontaneous in the forward or the reverse direction? forward ✓

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3) The molar heat of formation of NHẠNO3 (s) is -367.54 kJ and those of N20 (g) and H20 (1) are 81.46 and -285.8 kJ respectively at 25 °C and 1 atmospheric pressure. Calculate AH, AS, and change in free energy of the reaction. NH,NO3(5) → N20 + H20()