12. For a particular chemical reaction ΔΗ= 6.8 kJ and A--29 JK. Under what temperature condition Is the reaction spontaneous?

Q: A reaction has ΔH∘rxn= -134 kJ and ΔS∘rxn= 320 J/K.  At what temperature is the change in entropy…

A: Given: -ΔH°rxn = -134 KJΔS°rxn = 320 J/KIf everything is carried out at a constant temperature and…

Q: A reactions has ΔH°298 = 100 kJ/mol and ΔS°298 = 250 J/mol·K. Is the reaction spontaneous at room…

A:

Q: 10) Show that it is a spontaneous process for water to boil at 110 °C.

A: When we superheat liquid water at 110°C, the nature of the reaction can be stated by following it's…

Q: Does someone know the standard entropy values in J/K for H2(g), F2(g) and HF(g)?

A: The standard entropy values of hydrogen and fluorine gases are 130.6 J/Kmol and 202.8 J/Kmol…

Q: 9. A chemical reaction under standard state has the enthalpy of reaction: A,H° = +117 kJ and the…

A: B) The reaction is entropy driven.

Q: Determine if the following reaction is spontaneous at 298K BaCO3(s) ↔ BaO(s) + CO2(g) ΔHf˚ =…

A:

Q: For a reaction, ΔHrxn = -107 kJ and ΔSrxn = 285 J>K. At what temperature is the change in entropy…

A:

Q: Calculate the change in entropy that occurs in the system when 1.00 mole of isopropyl alcohol…

A: Given data Number of mole of isopropyl alcohol : n = 1.00 mole Boiling point of isopropyl alcohol :…

Q: Consider the following reaction under the standard state. 2 NO3 (g) = 2 NO2 (g) + O2 (g) The…

A:

Q: A reaction has ΔH °rxn = -112 kJ and ΔS °rxn = 354 J/K. At what temperature is the change in entropy…

A: The quantity of energy that is absorbed inside the system at a given temperature during a particular…

Q: At 25 °C the formation of NH, (g) has a positive AS" systom. Is this reaction spontaneous or…

A: Given: ∆Ssystemo=+180 J/K T = 25oC ∆HfoN2g=0 kJ/mol∆HfoH2g=0 kJ/mol∆HfoNH3g=-45.9 kJ/mol

Q: For the decomposition of mercury(II) oxide, HgO, to mercury and oxygen: 2HgO(s) → 2Hg(l) + O2(g)…

A: Standard entropy change is the difference of standard entropy of product from standard entropy of…

Q: For the reaction CaO(s) + CO2(g)CACO3(s) at 298 K, AG = -130.9 kJ/mol, AH= -178.3 kJ/mol, AS = -159…

A: For spontaneous reaction, value of  ΔG is negative. For non- spontaneous reaction,  value of ΔG is…

Q: For the reaction below AH = +92.2 kJ, and AS = +198.7 J/K. Estimate the temperature at which this…

A: To find the temperature.

Q: It is determined that a particular chemical reaction has AH°rxn = 105 kJ and As°rxn = 252 JK1.…

A: For spontaneous reaction delta G must be negative....

Q: A certain reaction has ∆?°= -19.5KJ and ∆S°= 42.7 J/K, does the reaction lead to an increase or…

A: here in given question change in entropy is given positive it means as reaction move forward entropy…

Q: The entropy of reaction for XeF6 (g) ⇌ XeF4 (g) + F2 (g) is 49 J/mol·K.  If the equilibrium constant…

A: Feasibility of a reaction depends on the change in Gibbs free energy. The value of change in Gibbs…

Q: 2 NH3 (g) + 2 O2 (g) → N20 (g) + 3 H20 (g) Is this reaction spontaneous only at low temperatures,…

A:

Q: Over what temperature range will the reaction KClO3(s) → KCl(s) + 3/2 O2(g) change from being…

A: Solution -

Q: Reaction 1: 20F2 (g) → O2(9) + 2 F2 (9) AH=-49.4 kJ Reaction 2: N2 (g) + 202(g) → 2NO2 (g) AH=+66.4…

A: When the gibbs free energy change is positive then the reaction is spontaneous and when the gibbs…

Q: the decomposition of ammonia to nitrogen and hydrogen gas. Substance S° (J/mol · K) H2(g) 130.7…

A: Entropy measures the randomness of the molecule. Gaseous molecule have higher entropy than liquid…

Q: The combustion of acetylene is used in welder's torches because it produces a very hot flame: C 2 H…

A: Standard molar enthalpy of carbon dioxide = -393.5 KJ/mol Standard molar enthalpy of water vapor =…

Q: Consider the following reaction at constant P. Use the information here to determine the value of ΔS…

A: If ∆S comes out to be positive then it would be considered as spontaneous otherwise negative then…

Q: For a reaction in which ∆H = 76.2 kJ/mol and ∆S = 422 J/K mol, determine the temperature, in °C,…

A: We have the equation for Gibbs free energy as, ∆G = ∆H-T∆S Where, ∆G = change in Gibbs energy ∆H =…

Q: For a particular reaction, ΔH∘=20.1 kJ and ΔS∘=45.9 J/K. Assuming these values change very little…

A:

Q: Standard molar entropies for CO(g), CO2(g), and O2(g) are 197.9, 214.0, and 205.0 in J/mol K,…

A: Entropy Entropy is the measure of disorder in a reaction. When an amount of energy is added to a…

Q: The following reaction for the production of hydrogen cyanide is spontaneous under standard…

A: In given reaction , formation of HCN is a endothermic process.

Q: Under what temperature range would the following reaction be spontaneous?   N2(g) + 3 H2(g) ⇌ 2…

A: The given problem can be solved by using the formula given below as; ∆G°=∆H° - T∆S°…

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: Consider the following reaction at constant P. Use the information here to determine the value of…

A: From thermodynamics: ∆Ssurr=∆HT                                                              . . .…

Q: The entropy of vaporization for a certain organic compound is 28.1 J/Kmol, and the boiling point is…

A: given data entropy of vaporization 28.1 J/kmol boiling T=51.7 ;c find out enthalpy of vaporization

Q: The enthalpy change (ΔHrxn) for a certain reaction is 700.0 kJ/mol.  The same reaction has an…

A:

Q: Calculate the standard free-energy change (ΔGo) at 25°C for the reaction H2(g)+O2(g) ⇌ H2O2(l)

A:

Q: (b) 2 Na(s) + 2 H20(1) → 2 NaOH(aq) + H2(g) As° J/K rxn As° × 10 J/K (enter your answer in…

A: Given data :- 2Na(s)    +     2H2O(l)     →   2NaOH(aq)    +    H2(g) ∆S for Na = 51.05 J/mol.K ∆S…

Q: For the reaction   2 PF5(g) + 5 H2(g) →  2 P(g) + 10 HF(g), calculate ΔGº and determine whether the…

A: Given,

Q: ΔHorxn = 102 kJ and ΔSorxn = 299 J K-1. Determine the minimum temperature (in K) at which the…

A:

Q: 5-For the reaction, A+B C, AH-+30 kJ; AS°=+50 J/K.Therefore the reaction is: (a) spontaneous at all…

A: ∆Hf°is the standard enthalpy change when one mole of a substance is produced from its constituent…

Q: Consider these two reactions: Reaction 1: 20F2(g) O2(g) + 2 F2(g) ΔΗ-49.4 k Reaction 2: N2(8) +…

A:

Q: 2 NH3 (g) + 2 02 (g) → N20 (g) + 3 H20 (g) Is this reaction spontaneous only at low temperatures,…

A:

Q: For a given reaction, dH = 32 kJ/mol and dS = 117 J/mol. At approximately what temperature would…

A: The spontaneity of the reaction can be determined by the change in Gibbs free energy. The relation…

Q: Consider the following reaction at constant P. Use the information here to determine the value of ΔS…

A: the reaction is said to be spontaneous when ΔG° is negative.  It ΔG° is positive, the reaction is…

Q: Consider the decomposition of dinitrogen tetroxide, N2O4, into nitrogen dioxide, NO2.  N2O4…

A: The balanced reaction given is, => N2O4 (g) → 2 NO2 (g) The thermodynamic data given is,…

Q: What is the temperature at which the reaction below becomes spontaneous, if the standard entropies…

A:

Q: A certain reaction is spontaneous at 65 ° C. If the enthalpy change for the reaction is  15…

A:

Q: A reaction has AH = -112 kJ and ASan = 354 J/K. At what temperature is the change in entropy for the…

A: The given data contains, ∆H°reaction=-112 kJ∆S°reaction=354 J/K

Q: Indicate whether each statement is true or false. CO21g2 and Ar(g) have nearly the same molar mass.…

A: The degrees of freedom of rotational and vibrational motion are directly proportional to the number…

Q: Which Substance would have the greatest standard molar entropy?   N2(I) NO2(I) NO2(g) N2(g)

A: To find: The substance having the greatest standard molar entropy N2 (I) NO2 (I) NO2 (g) N2 (g)

Q: For the reaction delta H° = 98.8 kJ/mol and delta S° =141.5 J/(mol*K). 3H2 (g) +Fe2O2(s) →2Fe(s)…

A: Given Data: