sys Example: If AS°, =-198.3 J/K, is the reaction spontaneous at 25°C N2 + 3H2 → 2NH3 • AS univ = AS sys + AS surr > ? AS surr (AHsys)/T Determine the AHrxn • AH° N2(g) = 0 kJ/mol • AH°, H2(g) = 0 kJ/mol • AH°; NH3(g) = -46.19 kJ/mol

sys Example: If AS°, =-198.3 J/K, is the reaction spontaneous at 25°C N2 + 3H2 → 2NH3 • AS univ = AS sys + AS surr > ? AS surr (AHsys)/T Determine the AHrxn • AH° N2(g) = 0 kJ/mol • AH°, H2(g) = 0 kJ/mol • AH°; NH3(g) = -46.19 kJ/mol

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...

See similar textbooks

Related questions

Q: Calculate the ASuni for the following reaction at 25°C in J/mol K. 2CH3OH(I) +302(g) → 2CO2(g) +…

A: Entropy is the spreading out of energy. Energy tends to spread out as much as possible. Therefore…

Q: 85. for the following reaction at 25°C and 1 atm: XeF,(g) → XeF,(s) + F,(g) AH¡ (kJ/mol) S° (J/K…

A: Given, And,

Q: If the AH = 238 kJ/mol and AS = 59 J/K mol, at what temperature does this reaction become…

Q: If the AH = 179 kJ/mol and AS = 104 J/K mol, at what temperature does this reaction become…

Q: 13) Calculate AG° spontaneous in each case? for the reaction above at a) -50.0 °C and at b) 675 °C.…

Q: When is the reaction of silver chloride forming spontaneous? Ag+ (aq) + Cl– (aq) → AgCl…

Q: could you double check thi s calculation B) we will apply the following equation ΔG° = -RTln(K)…

A: To calculate ∆G° using the value of equilibrium constant

Q: AH-2044 kJ and AS-103 J/K For reaction: C₂H₂(g) + 5O₂(g) + 3 CO₂ (g) + 4H₂O(g) ta) Calculate AG at…

Q: 39 of 48 Which reaction is spontaneous at SATP? O AH=62.5 kJ, AS -1.25 J/K O AH--10.1 kJ, AS=-49.6…

Q: Consider the reaction: 2KClO3(s)~2KCl(s)+3O2(g) At a standard state, △G for the reaction is -35kJ.…

A: The value of gibbs free energy change helps us to find if the reaction at a particular temperature…

Q: Which reaction(s) will be spontaneous at all temperatures? Question 23 options: A) 4NH3(g) +…

A: The change in Gibbs free energy (∆G) is given by the relation ∆G = ∆H - T∆S ∆H = change in enthalpy…

Q: Na (s) + 20 (g)-2NO; (e) AS = -121.77 J/K.mol; AH° = 66.36 kJ/mol Is the reaction shown above…

Q: A) AG becomes less negative and the reaction becomes less spontaneous. B) AG becomes more negative…

Q: I Determine AG° of the following reaction using: EAG° and Gibbs equation. Is the reaction…

A: Free energy of a reaction helps in determining the spontaneity of the reaction. Negative free energy…

Q: 2. Calculate the temperature in which the following reactions become spontaneous. b) Reaction B: AH…

Q: . Find AH, AS, and AG. Is this reaction exothermic and is it spontaneous? NO (g) + ½ 02 (g) -> NO2…

A: ∆H° and ∆S° can be calculated from the given standard values of each products and reactants. And…

Q: For the reaction НСНО(9) + оз (9) —> СО»(9) + Hә0() 2. the value of AG° is –618.8 kJ/mol at 25°C.…

A: First we need to calculate ∆H° value from the given data. Followed by we will use ∆S° using…

Q: Calculate G°, for the reaction below at 25.0 °C rxn NH,CI(s) →HCI(g) + NH3(g) given G°f [NH4CI(s)] =…

A: We have given that For reaction NH4Cl(s) --------> HCl(g) + NH3(g) We know that ∆Grxn =…

Q: Calculate AG rxn for the following reaction at 525 K. CH₂O(g) + 2H2(g) → CH4(g) + H₂O(g) Using: AH°=…

Q: Hi, I need help with this step-by-step please thank you.

A: For any reaction that proceeds spontaneously, the value of free energy that is Delta G remains…

Q: I Review Part A Standard Thermodynamic Quantities for Selected Substances at 25 °C Reactant The…

Q: A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a…

A: Given data :

Q: At what temperature will the reaction with ASrxn = -92.6 J/K and AHrxn =-61.4 kJ pivot %3D (switch)…

Q: Calculate the ΔS°rxn of the following reaction at 223°C and standard pressure. =_____J/mol•K

A: The reaction given is,

Q: For a particular reaction, AH° = -28.4 kJ and AS = -87.9 J/K. Assuming these values change very…

A: Given, ∆H° = - 24 kJ = - 2400 J ∆S° = - 87.9 J/K

Q: If a reaction has a ΔH = 150 kJ/mole and a ΔS = -2550 J/mole K, at what temperature range would…

A: Gibbs free energy change is negative for spontaneous reaction

Q: Find AS for the formation of 1 mole of PCl<(g) from its elements. J/K

A: The entropy change for the reaction is shown by the sum of the entropies of the products minus the…

Q: For the reaction of gaseous substances with increasing gaseous molecules (from reactant to product…

A: Given data ∆H° = +150 KJ/mole and ∆S° = 171 J/K-mole.

Q: 7) Calculate AG for a reaction at 85 °C if AH is -34.6 kJ and AS is -114 J/K. Is the reaction…

A: Given ΔH = -34.6 kJ ΔS = -114 J/K T = 85°C

Q: At 25°C, the reaction N2(g) + 3 H2(g) - -> 2 NH3(g) is extremely slow, although thermodynamics shows…

A: Data

Q: Consider the reaction below. Using the information provided below, calculate AG°rxn for the reaction…

A: Standard Gibbs free energy of a reaction can be used to determine the spontaneity of the reaction.…

Q: At 25 °C, the equilibrium partial pressures for the reaction A(g) + 2 B(g) 4C(g) + D(g) were found…

A: we have to calculate the Gibbs free energy for the reaction we have to calculate the temperature at…

Q: If the AH = 131 kJ/mol and AS = become spontaneous? 72 J/K mol, at what temperature does this…

Q: When in 1 atm of pressure, when is the reaction of formation of ozone from oxygen spontaneous? 3 O2…

A: We have to tell given reaction is spontaneous or not

Q: t temperature doe

Q: 18. Calculate AG at 298 K under the conditions shown below for the following reaction. So,(g) +…

A: Given reaction is : SO3(g) + H2O(g) →H2SO4(l) Kp=7.17×1015P(SO3)= 0.20 atmP(H2O) =0.88 atm

Q: AGm = -25.5 kJ/mol at 298. K for a hypothetical reaction If an initial mixture of reactants and…

A: The question is based on the concept of chemical thermodynamics.We need to calculate reaction…

Q: Calculate ASO for the reaction SICI4(g) + 2Mg(s) → 2MgCl2(s) + Si(s) Substance SICI4(g) Mg(s)…

A: Entropy (S) :- Entropy is a measure of disorderness or randomness in a system. The change in…

Q: If the AH = 200 kJ/mol and AS = 133 J/K mol, at what temperature does this reaction become…

A: Given: ∆H for the reaction = 200 kJ/mol ∆S for the reaction = 133 J/K mol We have to calculate the…

Q: If the AH = 287 kJ/mol and AS = 57 J/K mol for a nonspontaneous reaction, at what temperature does…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: If the AH = 149 kJ/mol and AS = 130 J/K mol, at what temperature does this reaction become…

Q: 2. Use the values of AH and AS to predict whether the reaction is spontaneous at 25°C. N2(g) +…

A: ΔG=ΔH∘−TΔS Explanation: In order to calculate the free energy for a reaction, the above equation…

Q: Which reaction below is spontaneous at low temperatures and nonspontaneous at high temperatures? O…

Q: Consider the reaction at 298 K. 2 C(graphite) + 0,(g) → 2CO(g) AH° = -221.0 kJ/mol Calculate the…

Q: Calculate G°rrxn for the reaction below at 25.0 °C NH4CI(s) HCI(g) + NH3(g) given G°f [NH4CI(s)] =…

A: Free energy of reaction :- The standard free energy change ( G°rxn ) of a chemical reaction…

Q: for the following reaction: (Giver vềi 176 KJ and AS = -284.5 J/K). a Celsius NH3(g) + HCI(g) --->…

A: Given values are ΔH = -176 kJ, ΔS = -284.5 J/K. Temperaure = 30° C = 30 + 273 K = 303 K The formula…

Q: 12) Calculate AG°, Dn for the following reaction at 25.0 °C. Is the reaction spontaneous? 3 H2 (g) +…

Question

sys
Example: If AS°, =-198.3 J/K, is the reaction spontaneous
at 25°C
N2 + 3H2 → 2NH3
• AS univ = AS sys + AS surr > ?
AS surr (AHsys)/T
Determine the AHrxn
• AH° N2(g) = 0 kJ/mol
• AH°, H2(g) = 0 kJ/mol
• AH°; NH3(g) = -46.19 kJ/mol

AI-Generated Solution

AI-generated content may present inaccurate or offensive content that does not represent bartleby’s views.

Unlock instant AI solutions

Tap the button
to generate a solution

Click the button to generate
a solution

SEE SOLUTION

Similar questions

Calculate AS° for the reaction SiClĄ(g) + 2Mg(s) → 2MgCl2(s) + Si(s) Substance SICI,(8) Mg(s) MgCl2(s) Si(s) S° / (J/K'mol) 330.73 32.68 89.62 18.83 471 J/K -198 J/K 255 J/K -255 J/K O 198 J/K
calculate ΔS rxn (standrad entropy) and Δ Ssurr for the reactions and determine if each is spontaneous at 25 degrees celsius.
For a particular reaction, AH° = 67.7 kJ and AS° = 126.9 J/K. Assuming these values change very little with temperature, at what temperature does the reaction change from nonspontaneous to spontaneous? T = K Is the reaction in the forward direction spontaneous at temperatures greater than or less than the calculated temperature? less than greater than
6
17
Please see picture which has the question on it. Thanks.
For a particular reaction, AH° = -93.8 kJ and AS° = –156.1 J/K. Assuming these values change very little with temperature, at what temperature does the reaction change from nonspontaneous to spontaneous? T = K Is the reaction in the forward direction spontaneous at temperatures greater than or less than the calculated temperature? less than greater than
9) For which set of values of AH and AS will a reaction be non-spontaneous at 25°C? a) AH• = -10 kJ, AS = - 15 J b) AH• = - 10 kJ, AS= +5 J c) AH° = + 5 kJ, AS = +8J
2 For the synthesis of ammonia where AG = -33.3 kJ/mole, determine whether the reaction is spontaneous at 25 C with the following pressures: PN, = 1.0 atm, PH, = 3.0 atm, PNH, = 0.020 atm N2(8) + 3H2(g) = 2NH3(g)
19 Thermodynamic Quantities for Selected Substances at 298.15 K (25°C) AHf AGf AS° AHf (kJ/mol) AGf (kJ/mol) AS° Substance (kJ/mol) (kJ/mol) (J/mol-K) Substance (J/mol-K) Aluminum Chlorine CI (g) C (аq) Cl2 (g) HCI (aq) HCI (g) Chromium Al (s) AIC13 (s) 28.32 121.7 105,7 - 131,2 165.2 - 705.6 - 630.0 109.3 - 167.2 56.5 Al203 (s) - 1669.8 1576.5 51.00 222,96 - 131.2 -95.27 - 167.2 56.5 186,69 Barium - - Ba(s) BaCO3(s) BaO(s) Beryllium Be(s) 63.2 -92.30 - 1216,3 - 553.5 - 1137.6 112.1 Cr (g) Cr (s) Cr203 (s) Cobalt Со (g) Copper Cu (s) CuCl2 (s) CuO (s) - 525.1 70.42 397.5 352.6 174.2 23.6 9.44 - 1139.7 - 1058.1 81.2 BeO(s) Be(ОН)2(8) 13.77 50.21 - 608.4 -579,1 - 817.9 - 905.8 439 393 179 Bromine 111.8 - 120.9 Br(g) Br-(aq) Br2(g) Br2(1) HBr(g) Calcium Ca(g) Ca(s) CaCO3 (s, calcite) CaCl2(s) CaF2(s) CaO(s) Ca(OH)2(s) CaSO4(s) 82.38 174.9 33.30 108.1 - 102.8 - 167,7 - 128,3 - 147.9 80.71 - 205.9 30,71 3.14 245.3 - 156,1 42,59 - Cu20 (s) Fluorine F (g) F- (aq) F2 (g) HF (g) Hydrogen 152.3…
Using provided data, determine AG° (kJ) for the following reaction at 349K. 2M(s) + 3X2(g) –→ 2MX3(s) AH°r (kJ/mol) S° (J/molK) M(s) 22.92 X2(g) 0 287.2 MX3(s) -494.3 140.4
Use the given data at 298 K to calculate AG°for the reaction CH4(g) + 2H2S(g) → CS2(g) + 4H2(g) Substance AHof (kJ/mol) S°(J/K·mol) O -50 kJ O 67 kJ O 184 kJ CH4(9) H2S(g) CS2(g) H2(g) -75 186 2.27 x 104 kJ -21 206 90 151 0 131