Question

Help on these would be great!

111) Th of 1 mol of A to B absorbs 15 kcal of heat from the surroundings when it occurs irreversibly. doing no work. At the same T and P, reversible conversion of 1 mol of B to A does 10 kcal of for work done on system, heat absorbed by system.) a) i) For A → B, determine qirrev and wirrev ermodynamics of a Cyclic Process: At 293 K and 1 atm pressure, chemical conversion on the surroundings, which returns the system to its initial state. (Recall sign convention rrev rev ii) For B → A, determine qrev and wrev. Explain your reasoning very briefly. b) Calculate (in any order)aHsys , ΔSsys, and AGsys for steps (i) and (ii) above. c)Calculate overall values of q, w_aHsys , ΔSsys, and ΔGsys for the two step process (cycle) A → B → A. Comment very briefly on the general significance your results. irrev rev IV) ΔG (not H or ΔS) as the criterion for the spontaneous direction of a process at constant T and P. A) What is Δ G for the process of freezing water to ice at 273 K? B) Calculate ΔH_as, and from them ΔG 1 ) for freezing supercooled liquid water to ice at 253 K and 2) for the hypothetical process of converting liquid water to ice at 293 K. C) Plot values of , TAS and ΔG vsT (253 K, 273 K and 293K) on one graph and verify that only Δ G is diagnostic of the spontaneous direction of this process.

Answer 1

iii)