The element gallium (Ga) freezes at 29.8°C its ΔHfus = 5.59 kJ/ mol. Calculate the value of ΔS when 1.0 mol gallium freezes at its normal melting point. Is ΔS positive or negative? Calculate the value of ΔS when 30.0 g of Ga(l) solidifies at 29.8 °C

Q: If a reaction has a ΔH of 188.0 kJ/mole and is spontaneous for all temperatures greater than  49.9…

A: For spontaneous reaction, the value of Gibbs free energy must be negative.

Q: Consider the reaction below for the decomposition of carbon tetrachloride gas:  CCl4(g)    ------>…

A: A negative value of Gibbs free energy change is indicated spontaneous reaction whereas a positive…

Q: Calculate the temperature (K) at which a reaction becomes spontaneous when ΔS = 769.8 J/mol-K and ΔH…

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Q: For a particular reaction, Δ?=120.5 kJ/mol and Δ?=758.2 J/(mol·K). Calculate Δ? for this reaction at…

A: Given data is  ΔH = 120.5 KJ/mol = 120500 J/mol And ΔS = 758.2 J/mol.K Since ΔG = ΔH - TΔS where T =…

Q: Consider the process of water boiling in a beaker that is open to the atmosphere. Which of the…

A: In the given question, we are boiling water in a beaker and then have to see its thermodynamic…

Q: Determine ΔS0 for the following reaction using the data from the table. Explain whether this value…

A:

Q: Use the data below to calculate ΔG at 245 K for the following reaction.  Compound   ΔH°f (kJ/mol)…

A: The Gibb’s equation of thermodynamic purposed a relation between ∆S, ∆H and ∆G with Temperature.…

Q: As O2(l) is cooled at 1 atm, it freezes at 54.5 K to form solid I. At a lower temperature, solid I…

A: The expression that will be used to determine the temperature at which solids I and II are in…

Q: What is Δ G° at 25 °C?   N 2O 4(g) → 2 NO 2(g) Δ H° = 58.03 kJ Δ S° = 176.7 J/K

A:

Q: HO H2SO4

A: In elimination reaction a species leave the substrate and double or triple bond is formed.

Q: How ΔGo is related to ΔHo and ΔSo . Illustrate by Equation ?

A: Given terms,    ΔGo , ΔHo and ΔSo  G - free energy H - enthalpy S - entropy

Q: What are the signs of ΔH,ΔS,ΔG when CO2 (dry ice) sublimes to a gas at room temperature and 1 atm…

A: Given A Dry ice sublimes to a gas at room temperature and 1 atm pressure. The temperature of dry ice…

Q: The addition of 121  g potassium fluoride to 591  mL of water (d = 1.00 g/mL) causes the temperature…

A: The mass of solution is calculated as shown,

Q: Determine ΔH, q, w, and ΔE at 298 K and 1 atm pressure for the reaction of 9.348 g of NH3(g) with…

A: Enthalpies of formation of NH3(g), HCl(g), and NH4Cl(s), which are -46.11 kJ/mol, -92.31 kJ/mol, and…

Q: A particular reaction has a ΔHo value of -141. kJ and ΔSo of -104. J/mol K at 298 K. Calculate ΔGo…

A: We are given :648. K Change in enthalpy (ΔHo)  =   -141. kJ change in entropy (ΔSo)  = -104. J/ K =…

Q: Are the values of ΔHvap and ΔSvap for boiling water going to be positive or negative? Explain if…

A: Given statement is :  Are the values of ΔHvap and ΔSvap for boiling water going to be positive or…

Q: Determine the ΔS0rxn of the reaction below:    N2H4(l) + N2O4(g) → N2(g) + H2O(g) ΔS0f (J/K)…

A: Ans

Q: The Keq for a reaction is 985 at 358 ∘C. Calculate the value of ΔrG∘ in kJ/mol at this temperature.

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Q: An example of a reaction where ∆G = 0 is   C(graphite)→C(diamond)   any synthesis reaction…

A: We know, The value of  ∆G = 0 when the reaction is at an equilibrium.

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: Consider the table. Metal Tm (K) ΔHfus (kJ/mol) Tb (K) ΔHvap (kJ/mol) LiLi 454 2.99 1615 134.7…

A:

Q: Calculate the enthalpy of vaporization of water at its normal boiling point. ΔS° [H2O()] = 69.9…

A: Given: ΔS° [H2O(l)]=69.9 J/K⋅mol ΔS°[H2O(g)]=188.8 J/K⋅mol T=100oC=373 K To find: Enthalpy of…

Q: Determine the sign of ΔSsys for the following chemical reactions without doing any calculations. a)…

A: Note: As per the guidelines solution of first 3 parts has been made. For the expert solution of…

Q: N2 (g) + 3H2 (g) → 2NH3 (g)   b Ag+ (aq) + Cl- (aq) → AgCl (s)   c CaO (s) + CO2 (g) → CaCO3 (s)…

A: In the above reaction  standard molar entropy of Gas is highert thanLiquids

Q: For the following hypothetical reaction, use the thermodynamic data provided below to determine the…

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Q: The ionization constant for water is 1.14*10-15 at 0 oC and 9.60*10-14 at 60.0 oC. i) Calculate the…

A: A reaction is said to be spontaneous if its Gibbs free energy is negative. We can calculate the…

Q: The normal boiling point of methanol is   and the molar enthalpy of vaporization if 71.8 kJ/mol. The…

A: Boiling point is defined as the amount of heat required to vaporize a liquid. this depends on…

Q: What are the signs of ΔH, Δ S, and ΔG for a spontaneous endothermic process?

A: Answer:Here, T must always be in Kelvin

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: It takes 38.6 kJ of energy to vaporize 1.00 mol of ethanol (MW: 46.07 g/mol). What will be ΔSsys for…

A: Given: Enthalpy change of evaporation = 38.6 KJ/mol. Temperature = 79.6 oC And the mass of ethanol…

Q: The normal boiling point of Br2(l)Br2(l) is 58.8 ∘C∘C, and its molar enthalpy of vaporization is…

A:

Q: The normal boiling point of a substance is 433 °C. Calculate the pressure at which this substance…

A: this solution is done using the clausius-clapeyron equation .

Q: Classify each statement as true or false.

A:

Q: The dissolution of ammonium nitrate occurs spontaneously in water at 25 °C. As NH4NO3 dissolves, the…

A: