Calculate the free energy change (ΔG) for the following reaction at 25.0o C:                     2 Ca (s) + O2 (g) --> 2 CaO (s)                     ΔHo rxn = -1279 kJ                                                                                          ΔSo rxn = -364.6 J/K Calculate the answer in units of kJ.

Q: Which one has a higher entropy? Explain briefly. MgC2(aq), NaCl(aq)

A: Entropy is a measure of the randomness of the system. The entropy of a system can be calculated by…

Q: The Keq of a reaction is exactly 1. This means... *

A: Answer: neither reactants nor products are favored (over the other) Explanation: Consider the…

Q: alculate the standard change in Gibbs free energy for the reaction at 25 °C. Standard Gibbs free…

A: Standard gibbs free energy for the above reaction is

Q: If enthalpy is +220 kJ for a reaction and entropy is +120 J, at what temperature is this…

A: The spontaniety of any reaction is decided by the Gibb's free energy change if the reaction. Any…

Q: 50. For the process O2(g) → 2 O(g), AH° = +498 kJ. What would be predicted for the sign of ASrxn and…

A: 50. The given process has a positive sign for enthalpy change. Hence, the process will be an…

Q: the following reaction 2 NO (g) +  O2 (g) -> 2 NO2 (g) Horxn = -12 kJ and Sorxn = -146 J/K. a.…

A: Given-> 2NO(g) + O2(g) ---> 2NO2(g) ∆H°rxn = -12 KJ = -12000 J (1 KJ = 1000J) ∆S°rxn = -146J/K…

Q: At what temperatures is the following process spontaneous at 1 atm? ΔH° = +20 kJ and ΔS° = - 50 J/K

A: The reaction is always non-spontaneous at all temperatures.

Q: For the following reaction:    H° = -1037 kJ and S° = -153 J/K Calculate G° at 25°C for this…

A: Given that : H° = -1037 kJ = -1037000 J and S° = -153 J/K We have to calculate G° at T = 25°C = 298…

Q: (a) What is the maximum electrical work obtainable from the reaction | 0,(g) + H,(g) = H,O(1) %3D…

A: In a reversible reaction, very less amount of heat is lost and thus such reactions are highly…

Q: For a reaction to be spontaneous, which of the following factors should have a negative sign? a…

A: Given : We have to tell what is requirement for spontaneity of a reaction

Q: Consider the reaction described by the chemical equation shown. C,H,(g) + H,O(1) → C,H,OH(1) AHan =…

A: The details solution for this is provided below in attach image.

Q: Calculate ΔG°rxn (in kJ) for a reaction where ΔH°= +63 kJ, ΔS°= +675 J/K, and T = 298 K

A:

Q: Calculate how much heat (in kilojoules) a hand warmer containing 23.0 g of iron powder produces.

A:

Q: Calculate ΔH° for the process Sb(s) + 5 2 Cl2 (g) ⟶ SbCl5 (s) from the following information: Sb(s)…

A:

Q: Consider the reaction described by the chemical equation shown. 3 C,H,(g) C,H,1) AHxn = -633.1 kJ…

A:

Q: Calculate the standard free energy change for the reduction of Fe,O, by hydrogen to produce iron…

A: Standard free energy change for the reaction is given by the expression, ∆Go=∆Ho-T∆So

Q: For a certain reaction, ΔH = -35.4 kJ/mol and ΔS = -85.5 J/K mol. Is this reaction endothermic or…

A:

Q: Calculate AH° for the reaction: Na,0(s) + SO;(g) – Na,SO,(g) given the following information: AH°…

A:

Q: Using enthalpies of formation (See the Supplemental Data), calculate ΔH° (in kJ) for the following…

A:

Q: () What are the thermodynamic quantities of a system that affect the amount and sign of the internal…

A: (i) According to thermodynamic, the change in internal energy (ΔU) is, ΔU=q + w Therefore, internal…

Q: Calculate ΔG° for a reaction for which ΔH°= 20 kJ and ΔS° = 140 J/K at 298 K. Is the reaction…

A: Given  ΔH°= 20 kJ  1 kJ =1000 J ΔH°= 20,000 J ΔS° = 140 J/K T = 298 K  ΔG° = To be determined

Q: Using enthalpies of formation (See the Supplemental Data), calculate ΔH° (in kJ) for the following…

A:

Q: An endothermic reaction can be demonstrated by freezing an Erlenmeyer flask to a piece of plywood…

A:

Q: An ice cube at 0 C melts when placed inside a room at 22 C (295 K). Based on the concepts of…

A: We need to identify the concept of spontaneity behind melting of ice according to thermodynamics.

Q: For a certain process,ΔH° = -35.4 kJ and ΔS° = -45.1 J/K. Calculate ΔG° for this process and…

A:

Q: What do standard states have to do with free-energy changes?

A: Standard state is like the reference state of the substance, the phase of the substance usually…

Q: Calculate Q(kJ )for the conversion of 2.390 g of solid aluminum oxide into aluminum and oxygen?

A: Given enthalpy change (∆H) is defined for 2 mole of AL2O3 because generally enthalpy change is…

Q: Given the ∆H°f, calculate the ∆H°rxn for the formation of diamond from graphite.  ∆H°f (C, graphite)…

A: The reaction is  C (graphite) -----> C (diamond) Since the ∆H°rxn = ∆H°f of products - ∆H°f  of…

Q: If the process is exothermic and not spontaneous, then what must be TRUE? O a. AS> 0 O b. AS0 O d.…

A: Exothermic process heat is given by system... Endothermic process heat given to the system...

Q: For the following reaction: SO2 (g)_± ½ O2(g)→ SO3(g) For this reaction to be spontaneous, what must…

A:

Q: For a reaction for which AH = -142 kJ/mol and AS = -178 J/mol· K, which of the following statements…

A: If ∆G is negative, the process is spontaneous and may proceed in the forward direction. If ∆G is…

Q: I need help with number 3 thank you

A: The Gibbs free energy can be defined as a thermodynamic potential which is used to calculate the…

Q: What is the maximum amount of useful work that could possibly be obtained at 25 °C and 1 atm from…

A:

Q: For a reaction   ΔH= -4.7 kJ  and  ΔS= -69.5 J/K at 25 oC.  Determine the ΔG for this reaction

A: The question is solved using Gibbs – Helmoholtz equation.

Q: Which of the following statements define the third law of thermodynamics? O Process that requires…

A: The statement which defines the third law of thermodynamics is to be explained.     Third law of…

Q: Which of the following statements correctly describe the second law of thermodynamics? I. Heat will…

A: Answer  Second law of thermodynamics The first law of thermodynamics state…

Q: Determine if this reaction is spontaneous under standard conditions; knowing that the reaction's…

A: Spontanity of reaction is determined in terms of Gibbs energy formula.

Q: For a particular reaction, Δ?∘=67.7 kJ/mol and Δ?∘=126.9 J/(mol⋅K). Assuming these values change…

A: Given : ΔHo of reaction = 67.7 KJ/mol = 67700 J/mol…

Q: For the reaction Co(g) + 3H2(g)CH4(g) + H20(g) AH° = -206.1 kJ and AS° = -214.7 J/K The maximum…

A:

Q: Calculate the standard change in Gibbs free energy for the combination reaction of sulfur dioxide…

A: Gibb's free energy can be calculated by a general formula-  ΔG = ΔH - TΔS

Q: What should be the sign of EMF for the reaction to be considered spontaneous? Why?

A: The Gibbs free energy for a spontaneous reaction has a negative sign. ∆G = -ve for spontaneous…

Q: Is the formation of ozone (O3(g)) from oxygen (O2(g)) spontaneous at room temperature under standard…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: Calculate ∆G° for a reaction for which ∆H° = 24.6 kJ and ∆S° = 132 J/K at 298 K. Is the reaction…

A:

Q: Use the Standard Thermodynamic Properties table to calculate AH following reaction: B2H6 (g) + 3 02…

A:

Q: 1. Given the following thermochemical data at 25°C and 1 atm pressure, 3 02(g) + 2B(s) → B2O3(s)…

A: Given, 3/2 O2 (g) + 2 B(s) →B2O3 (s)   ∆H1°= -1264kJ O3 (g) + 2B (s) →B2O3 (s) ∆H2°= -1406 kJ 2O3…

Q: Given the data below, calculate the temperature at which the reaction becomes spontaneous: N2 (g) +…

A:

Q: 9) For which set of values of AH and AS• will a reaction be non-spontaneous at 25°C? a) AH• = -10…

A: Multiple question

Q: Calculate the free energy change for the formation of one mole of ammonia from its elements under…

A: The formula that can be used in the solution is : ΔG° = ΔG°f(products) - ΔG°f(reactant)

Q: Predict the sign of ASO for the following reactions and justify your answers: CS2 (1) ----> CS2 (g)…

A: The sign of the deltaS0 has to be predicted.

Q: For which one of the following substances is AG,, the Gibbs free energy of formation, equal to zero?…

A: Option d should be the right answer.