The element gallium (Ga) freezes at 29.8 °C, and its molar enthalpy of fusion is ∆Hfus = 5.59 kJ>mol. (a) When molten gallium solidifies to Ga(s) at its normal melting point, is ∆S positive or negative?

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: 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: Calculate the change in the Gibbs free energy (ΔGorxn) in J for the decomposition of carbon…

A:

Q: 11. A process that gains or accepts energy as it takes place is a(n) a. exergonic process b.…

A: A reaction in which free energy is released is called an exergonic reaction. In this Gibbs free…

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: Predict whether the entropy change of the system in N2 (g, 10 atm) —> N2 (g, 1atm) is positive or…

A: The entropy of a substance increases with its molecular weight and complexity and with temperature.…

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

A:

Q: At what temperatures will a reaction be spontaneous if ΔrH° = +62.4 kJ and ΔrS° = +301 J/K?

A: The given values are: ∆rH°=+62.4 kJ=62400 J ∆rS° =+301 J K-1 For a reaction, the relation between…

Q: Which of the following are spontaneous processes? 1. Ice melting at 1atm and 298 K (assume only ice…

A:

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: What is the entropy change (in J/K) of 85 g of steam at 100°C when it condenses to water at the same…

A: At phase transition, the entropy change is defined as the ratio of enthalpy change and temperature…

Q: 1. Benzene (C6H6) boils at 80.1°C and its molar enthalpy of vaporization is AHvap=31.0 kJ/mol. a.…

A:

Q: Would each of the following changes increase, decrease, orhave no effect on the number of…

A: Given changes, (a) increase in temperature (b) decrease in volume (c) change of state from liquid to…

Q: Above what temperature (in ºC) does the reaction with H' of 192 kJ/mol and S’ of 622 J/mol·K become…

A:

Q: 3. Consider the dissolution of NH,NO, in a chemical cold pack a. Is the process spontaneous? b. Is…

A: Those reaction in which energy is absorbed are known as the endothermic reactions while the…

Q: Which of the following is a quantitative measure of disorder? a.Free Energy B.Enthalpy C.Entropy…

A: Which of the following is a quantitative measure of disorder?

Q: 6.) The diagram below shows the deposition of iodine vapor at room temperature. Which statement is…

A: The ordered system is the indication of low entropy. While less orderliness is the indication of an…

Q: W(s) W(1) AH fu = 35 kJ/mol; AS" fus = 10 J/(mol K) The chemical equation and thermodynamic data for…

A: Introduction :  We have to tell that the tungsten will melt or not .

Q: 5.2 c  The diagram on the far left in the row showsa system before a process. Which of thediagrams…

A: According to first law of thermodynamics, the internal energy change of the system is equal to the…

Q: Which of the following species will have the greatest magnitude of change in Gibbs free energy due…

A: Gibbs free energy is the energy available for useful work to be done. Now as its given in the…

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: (Q77) The standard Gibbs free energy (AG°rxn) for the formation of sulfur trioxide from sulfur…

A:

Q: Consider the decomposition of liquid benzene, C6H6(l), togaseous acetylene, C2H2(g):C6H6(l)…

A: a) C6H6(l) -----> 3 C2H2(g) ΔH = +630 kJ  the enthalpy change for the reverse reaction  3 C2H2(g)…

Q: Is it possible for an ice to have a higher entropy than water? Why?

A: Entropy is the measure of the randomness of the system. The more disordered the system more will be…

Q: Which of the following processes are spontaneous and which are nonspontaneous:formation of CH4 and…

A:

Q: If the Delta*H = 135kJ / m * ol and AS 92 J/K mol, at what temperature does this reaction become…

A:

Q: 6) Consider H;0 going from the gas phase to liquid phase to solid phase. Describe the changes in…

A: In the vapor state, the gas phase of water, water molecules have the highest kinetic energy and this…

Q: (6: 2 pts): What is the second law of thermodynamics? How are ice freezing and water boiling…

A: The second law of themodynamic: The entropy of the surroundings increases by an amount equal to the…

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: When an instant hot pack is activated, aqueous sodium acetate crystallizes to form a solid and heat…

A: Given, At the point when a moment hot pack is enacted, aqueous sodium acetate derivation solidifies…

Q: (Q69) Using the tabulated values from the text (located in Appendix G, beginning at p. 1211)…

A:

Q: From your knowledge of microstates and the structure of liquid water, explain the difference in…

A: Finding: Microstates To find Structure of liquid water

Q: A common name for methanol (CH3OH)is wood alcohol. The normal boiling point of methanol is 64.7 °C…

A:

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: The dissolution of CaCl2 in water is product-favored, but the temperature of the surrounding water…

A: Change in entropy of mixing of gases (∆S)- Entropy of mixing of gases is always positive Because…

Q: Which of the following species will have the greatest magnitude of change in Gibbs free energy due…

A: The Gibbs free energy is the energy that is present in the system and can be tapped for doing work…

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: Calculate AG°rxn (in kJ) for a reaction where AH°= +124 kJ, AS°= +223 J/K, and T = 298 K %3D

A: Given; Enthalpy of the reaction (∆H°) = + 124 kJ Entropy of the reaction (∆S°) = + 223 J/K = + 0.223…

Q: Which of the following statements must be true for the entropy of a pure solid to be zero? I. The…

A: Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing…

Q: Using standard enthalpies of formation and standard molar entropies, determine the normal boiling…

A: The equation for the vaporization of water – CH3OH l ↔CH3OH g At equillibrium, ∆G∘ =0∆G∘ =∆H∘ -T∆S∘…

Q: 5. The entropy change of the process H2O (s) H2O () is 22 J/K at 0 °C. Calculate the enthalpy of…

A: H2O(s)↔H2O(l)∆H=22J/KT=0∘C=0+273K=273K∆S=∆HT

Q: Consider a process in which the entropy of a system increases by 105 J K−1 and the entropy of the…

A: Given information,    The entropy of a system increases by 105 J K−1    The entropy of the…

Q: What is the standard change in free energy (in kJ) at 127°C for the reaction below, given ∆H° = -312…

A: given data are- ∆H° = -312 kJ  ∆S° = +66.7 J/K temperature = T = 127oC = 127 + 273 = 400 K 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: How does the entropy of ice at −5°C diff er, if at all, from its entropy at −50°C?

A: Entropy- Entropy is a thermodynamic property. Entropy determines tendency of process. Tendency means…

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: If a cube of ice at 0°C is placed outside on a warm summer day, the ice will melt spontaneously.…

A: Spontaneous reaction is the one which undergoes by itself without the aid of external help. For a…

Q: The normal freezing point of n-octane (C8H18) is -57 °C.(a) Is the freezing of n-octane an…

A: Given that the freezing point of n-octane is -57 oC.

Q: Why do exothermic processes tend to be spontaneous at low temperatures?

A: Why do exothermic processes tend to be spontaneous at low temperatures?

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: Predict the sign of q for the process of water vapor condensation. 0 >b q >0 q =D0 Predict the sign…

A: The question is based on thermodynamics. and focus on the ways of exchange of energy between system…

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

A:

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: Explain Thermodynamic Processes?

A: The four types of thermodynamic process are isobaric, isochoric, isothermal and adiabatic.