Which molecule do you expect to have the lowest molar entropy at 300 K? Circle t

Question

Which molecule do you expect to have the lowest molar entropy at 300 K? Circle the correct answer and briefly explain your answer. CHF_3(g) CHCl_3(g) CHBr_3(g) CHI_3(g) Consider the change shown below and write a general differential expression for the change in energy, enthalpy, and entropy in terms of measureable quantities (things that can be looked up or measured easily in lab. i.e. Cp, Cv, alpha, kappat, P, V, T). dE = dH = dS = Consider a process that takes 1 mole of an ideal gas initially at 300 K and 1.00 bar to a final state where the pressure has increased to 10.0 bar. Do the calculations and answer the questions below about this change in state. Calculate deltaE, deltaH, deltaS, deltaF, and deltaG for a one-step, reversible, isothermal path from the initial state to the final state. C_v= 1.5R. Imagine a two step path in which the first step is an adiabatic compression to the final pressure. Without doing any calculations, is T_2 larger than, equal to, or smaller than 300 K? Briefly explain how you know. (The two-steps are shown below.) What are the values of deltaE, deltaH, deltaS, deltaF, and deltaG for the overall two-step process depicted in part b)?

Explanation / Answer

1. CHI3 has highest molar entropy as it has the highest molar mass which makes it bigger molecule, hence greater entropy.

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