CHEMISTRY · Multi-part · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry
Problem
Three chemical processes (A, B, and C) are proposed for a new synthetic route and will be carried out at 298K.
Process A: a gas-phase rearrangement with K=5.0×103
Process B: an acid–base neutralization with ΔG∘=+8.6kJ⋅mol−1
Process C: an isomerization with ΔG∘=−2.0kJ⋅mol−1
(a) Calculate the equilibrium constant for Process B and for Process C. Express each value with an appropriate number format and significant figures.
(b) Rank Processes A, B, and C in order of decreasing product favorability at equilibrium. Explain your reasoning concisely.
(c) For the process you ranked as least favorable toward products, estimate the approximate mole fraction of products present at equilibrium if the initial mixture starts with 1.00mol of reactant and no product. Justify any assumption you make.