Thermodynamics of the Dissolution of Borax Prelaboratory Assignment 1. The standard free energy change for the...
The standard free energy change for a strong acid-strong base neutralization reaction at 25C° is -79.9KJ. H3O+(aq) + OH-(aq) --> 2 H2O(l) a. Calculate the equilibrium constant for the reaction and explain it's chemical significance.
Will this reaction take place? Thank you Thermodynamics Gibbs Free energy Calculate Gibbs free energy for reaction of urea hydrolysis CO(NH2)2(aq) + H2O(0) = CO2(g) + NH3(e) From standard enthalpy and entropy data: AH° = 119 kJ AS9 = 354.8 J/K = 0.3578 kJ/K T = 25°C = 298°K AG = AH° – TYAS°
Calculate the standard change in Gibbs free energy, AGixn , for the given reaction at 25.0 °C. Consult the table of thermodynamic properties for standard Gibbs free energy of formation values. NH,CI() = NH(aq) + Cl(aq) AGxn = -7.7 kJ/mol Determine the concentration of NH(aq) if the change in Gibbs free energy, AGrxn , for the reaction is –9.53 kJ/mol. [NH] = 0.72 Consider a general reaction enzyme A(aq) = B(aq) The AG® of the reaction is -4.880 kJ mol-....
For the reaction A(aq) ---> B(aq) the change in the standard free enthalpy is 3.45 kJ at 25 oC and 4.56 kJ at 45 oC. Calculate the value of this reaction's equilibrium constant at 75 oC.
For the reaction A(aq) ---> B(aq) the change in the standard free enthalpy is 2.60 kJ at 25 oC and 5.18 kJ at 45 oC. Calculate the value of this reaction's equilibrium constant at 75 oC.
For the reaction A(aq) ---> B(aq) the change in the standard free enthalpy is 2.71 kJ at 25 oC and 4.89 kJ at 45 oC. Calculate the value of this reaction's equilibrium constant at 75 oC.
A reaction has a standard free-energy change of -11.40 kJ mol-1(-2.725 kcal mol-1). Calculate the equilibrium constant for the reaction at 25°C.
A reaction has a standard free-energy change of –16.50 kJ mol-1(-3.944 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C. Keq = _______
For the dissolution of thenardite shown below, calculate the following (at STP, 25 °C and 1 atm):Na2SO4 (s) ↔ 2Na+(aq) + SO42-(aq) (a) standard??° enthalpy of reaction (∆????°), ??° (b) standard Gibbs free energy of reaction (∆?? ) using standard Gibbs free energy of formation values (∆?? ), and (c) equilibrium constant (K). (d) Is this a spontaneous reaction [i.e., the dissolution reaction (left to right)]? Explain.
1. Is the dissolution process studied today, NaNO, (s) Na+ (aq) + NO, (aq) spontaneous or nonspontaneous? How can you tell? What is the sign of AG? 2. Using the class's mean value for AH, and the Gibbs-Helmholtz equation, estimate the value for AS for the dissolution process. (See Calculations section.) 3. Based on your observation about the spontaneity of the reaction and the sign of AH, is the value of AS that you calculated a minimum or a maximum?...