7. The boiling point of hexane is 69.0°C. Estimate (a) its molar enthalpy of vaporization and (b) its vapor pressure at 25°C. AHml1605

Q: calculate the Gibbs free energy of formation of BiF5 at 298 K. Is the formation of BiF5 from the…

A: Given to us that: The formation of a BiF5 molecule by its standard elements . And Temperature T=298K…

Q: Is change in Gibbs free energy for the melting of ice greater or less than zero? A>0 C.-0 D. It…

A: According to the second law of thermodynamics, the spontaneous nature of the reaction is determined…

Q: What is the minimum temperature for the spontaneous reaction of CCI4 (1) to CCI4 (g)" when AH° is…

A: By using the formula ∆G=∆H-T∆S Given ∆H =573kj/mol K

Q: How Gibbs free energy is determined by the volume of the substance ?

A: To find: relation between Gibbs free energy and volume?

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: What is the change in 'molar' gibbs free energy?  Could you give me an example of the calculation…

A: The change in Gibbs free energy of the system can be expressed in the term of change in enthalpy and…

Q: For a certain chemical reaction, the equilibrium constant K = 5.1 × 10 ° at 10.0 °C. Calculate the…

A: Given temperature is 283 Kelvin

Q: Look up the boiling point of benzene. Then calculate the change in Gibbs Free Energy for che…

A:

Q: Given ΔHrxn∘= −135 kJ, ΔS∘rxn= −263 J/K, and T= 550 K, will the reaction be spontaneous or…

A: Solution :     The change in Gibbs free energy calculated by the change in entropy, temperature, and…

Q: How does temperature effect spontaneity? Under what conditions is enthalpy the dominant…

A: We know that, ΔG = ΔH - TΔS For a reaction to be spontaneous ΔG must be negative in sign ΔG < 0 ,…

Q: For the isothermal expansion of a gas into a vacuum,ΔE = 0, q = 0, and w = 0. (a) Is this a…

A: (a) The spontaneous process is the process which starts on its own or initiate without any external…

Q: ST3D.3- At constant temperature and pressure, what is the minimum mass [in g] of glucose needed for…

A: Answer: Value of gibbs free energy change is always equal to non-expansion work and over here…

Q: Describe how entropy and enthalpy combine for the overall determination of spontaneity. What values…

A: The Gibbs equation, shown in equation (1) where ΔH is the enthalpy change, ΔS is the entropy change,…

Q: starting from the definition of Gibbs Free Energy, the 1st law of thermodynamics, the 2nd law of…

A: To derive the criteria for spontaneity for Gibbs free energy.

Q: What is the change in entropy when 0.125 mol of potassium freezes at 67.2°C (Hfus = 2.39 kJ/mol)?

A: Freezing point, standard enthalpy of fusion and standard entropy can be related by the equation…

Q: Calculate the entropy of vaporization when the enthalpy of vaporization of propanol is 30.25 J.…

A: Given that, enthalpy of vaporization of propanol, ∆Hvap =30.25 J/mol This is also known as the heat…

Q: What is the change in entropy when 0.200 mol of potassium freezes at 63.7°C (H(fus)=2.39 kJ/mol)?

A: Entropy is a state function and it gives a measure of randomness in a system.Change in entropy is…

Q: Use the data given here to calculate the values of AGixn at 25 °C for the Compound AG; (kJ/mol)…

A: The reaction taking place is given as, => A + B ----> C

Q: Calculate the standard free-energy change for the formation of NO(g) from N2(g) and 02(g) at 298 K:…

A: Given:

Q: What is the significance of the change in Gibbs free energy (ΔG) for a reaction?

A: In thermodynamics free energy or Gibbs free energy is the energy that is used to express the total…

Q: Identify the equation of Gibbs free energy, AG to predict the spontaneity of a reaction.

A: ANSWER

Q: What is the change in entropy when one mole of calcite (CaCO3) decomposes at 298.2 K to CaO(s) and…

A:

Q: For the sublimation of iodine at 25°C I2(s) → I2(g) the values of ΔH° and ΔG° are, respectively, 62…

A: Given that: Reaction = I2(s) → I2(g) ∆H° = 62 kJ = 62000 J ∆G° = 19 kJ = 19000 J Temperature (T) =…

Q: When is Gibbs free energy negative? If is it spontaneous or non-spotaneous?

A: Gibbs free energy change is a thermodynamic parameter, which is associated with the enthalpy and…

Q: Consider the (endothermic) thermal decomposition of calcium carbonate: CaCO3(?) → CaO(?) + CO2(?).…

A: Given, Thermal decomposition of calcium carbonate. CaCO3(s)⇌CaO(s)+CO2 (g) It is an example of…

Q: If there are two chemical reactions: #1 with change in Gibbs free energy of -25 kJ/mol; and #2 with…

A: #2 since it has a higher change in Gibbs free energy.

Q: (Q78) The equilibrium constant (Keg) for the formation of dinitrogen tetroxide (N2O4) from nitrogen…

A:

Q: Define gibbs free energy in a reaction.

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

Q: For a certain chemical reaction, the equilibrium constant K = 1.6× 10 at 25.0 °C. Calculate the…

A:

Q: What is the application of standard Gibbs free-energy to processes and reactions What is its…

A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

Q: Consider the synthesis of sulphur trioxide from its elements at 25°C: S8(s) + 302(8) → 2SO3 (g)…

A: The given chemical reaction is as follows: 14S8(s) + 3O2(g) → 2SO3(g)  The ∆rG° of the reaction can…

Q: What is the vapor pressure, in mmHg, of ethanol at 52.1 °C? What is the entropy of vaporization at…

A:

Q: What is Gibbs free energy, and what is ΔG for a reaction, and what does it mean if ΔG is positive,…

A: Gibbs free energy : It is defined as the maximum reversible non-PV work that can be obtained from…

Q: Why is a reaction with a negative Gibbs free energy, AG, spontaneous? Explain.

A:

Q: Consider the physical process at 1 atm pressure: Br2 (l) -->  Br2 (g)   where  ΔHo = 31.0 kJ/mol and…

A: Br2 (l) -->  Br2 (g) ΔHo = 31.0 kJ/mol = 31000 J/mol ΔS = 93.0 J mol-1 K-1

Q: What is the significance of the change in Gibbs free energy (∆G)for a reaction?

A: The significance of the change in Gibbs free energy (∆G)for a reaction: (i) If ∆G for a reaction…

Q: What is the chemical significance of a positive Gibbs free energy change and what is the chemical…

A: The amount of energy available for doing some useful work is termed as free energy or Gibbs free…

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: Explain why changes in both enthalpy and entropy determine the spontaneity of a process.

A:

Q: The Gibbs Free Energy Equation: AG change in free energy ΔΗ change in enthalpy TAS (temperature)…

A: Gibbs's free energy measures the spontaneity of the process. The Gibbs free change for a given…

Q: For a process that occurs at a constant temperature, does the change in Gibbs free energy depend on…

A: The Gibbs energy change can be defined by the expression as- ∆G=∆H−T∆S where ΔG: Gibbs Free Change…

Q: What is the molar entropy of a pure crystal at 0 K? What is the significance of the answer to this…

A: The third law of thermodynamics states that entropy of a pure crystal at a temperature of zero…

Q: The enthalpy for a certain process is 146.4 kJ/mol and the entropy for the process is 463.6 J/K.  At…

A:

Q: What will be the enthalpy of reaction in KJ if the entropy (ΔS) is 519 J/K at 73oC?

A: Given  Change in Entropy ( ∆S ) = 519 Joule/K  Temperature ( T )  = 73℃…

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 Gibbs free energy change for the conversion of glucose to fructose that occurs during…

A:

Q: Calculate the standard change in Gibbs free energy of the following reactions at Standard Ambient…

A: At SATP, Pressure, P = 1 atm Temperature, T = 25 °C                          = (25 + 273.15) K…

Q: The mathematical equation that best defines the change in molar entropy of the system is O A. Atrs S…

A: Reversible phase transition requires positive heat qtrs . Because the pressure is constant, the heat…

Q: Calculate the boiling point (in K) of C2H5Cl according to the standard enthalpy of formation and…

A: The boiling point of C2H5Cl is calculated by the formula, T=∆Hfl-∆HfgSfl-Sfg......(1) Where, ∆Hfl…

Q: A certain reaction has ∆H ° = +23.7 kJ and ∆S° = +52.4 J>K. Is the reaction spontaneous at 298 K…

A: Entropy is the measure of disorderness or randomness of a system. The standard value of entropy can…