Question 8 Calculate the standard entropy change and report its value in J/K mol for the following reaction: 2AB (g) -+2 A(g) + 6(e) Given: S"[A ] - 286 J/K-mol, S"[B(g)]- 131 J/K-mol, and S"[AB,()] - 849 J/K mol. If the value is negative include the sign. Do not include units. Previous
8) Find the molar entropy change when H20 (1) at 1.00 atm and 300 K is changed to H2O (g) at 1.00 atm and 500 K. The enthalpy of vaporization of H2O is 40.66 kJ mol"! Cp [H2O(1)]=[12.16-1.943 x 10-2T +3.042 x 10-ST?]R Cpm[H,0(8)]=[3.633–1.195 x 10-T +1.34 x 10-?T?]R
Starting with an expression for U(S.V), show that m(V) = (dU/dV)T is given by Tt(v)= (dp/dT)V-P.
a) Show that the molar entropy change, Asm, is given by ASm = Cy,m In + Rin" if one mole of an ideal gas is taken from T,,V, to T2, V, assuming that Cv.m is independent of temperature. b) Calculate the value of the molar entropy change, Asm, if one mole of N2(g) is expanded from 20.0 dm² at 273 K to 300 dm at 400 K. (Cp.m = 29.4 JK-Imol-?)
M T = 298 K x = +157J/K; T = 398 K u Entropy Changes and Gibbs Free F 43. Calculate the change in Gil AH my Lach pair of substances, choose the one that you have the higher standard molar entropy reasons for your choices. a. NaNO,(s); Nano c. Br. Calculate the change in entropy that occurs in the system. When ss. Og of Water vaporizes from a liquid to a gas at its boiling point (1oooo) Attrap =...
Calculate the entropy change of the following reaction (in JK) the following standard entropy values (given in J/mol-K): A-2922, B-2424. C-2618, D = Number J/K
8) A given reaction absorbs 125 kJ of energy and gains 11.8 J/K of entropy. Under what conditions will the reaction be spontaneous? Solve for "T"
2. Heat equations. Prove the following equations for T dS, where we are assuming that the number of parti- cles N is not changing. a. A first equation, Та dV КТ T dS Ncv dT b. A second equation, T dS Ncp dT- TVa dP.
5. (14 pts) Calculate the entropy change As for the follow ate the entropy change AS for the following transformation involving one mole of H20 H2O (5,300 K) → H2O (1,400 K). You may need to use the following data: T-273K: A -6015 mol T. 373 K AN - 40.65 kJ mol" C, (s)36.2 mol"K": ,4-753J mol"'"'; cols - 33 61 mol"'"'
Please help with detailed explanation 8) Phase change (homework) Calculate the entropy change in the universe when a 15.0 g ice cube melts (0°C) in your hand (37°C). Given: AfusH = 6.01 x 103 J/mol 9) Phase change at Boiling point Predict the normal boiling point in °C) of sodium, given that the entropy of 1 mol Na (l) changes by +84.8 J/K when it forms a vapour at 1 bar pressure, with ApapH = +98.0 kJ/mol Remember: The liquid...