Identify which of the following compounds follow Trouton's rule.

Using the thermodynamic data below calculate the ΔS°_rxn for the following reaction and justify the change in entropy.

CO(g) + NH₃(g) → HCN(g) + H₂O(g)

Assuming that ethane (C₂H₆) behaves as an ideal gas, determine the change in entropy when the volume of 3.90 g of C₂H₆ decreases from 1.95 L to 1.08 L at a constant temperature of 298 K.

Consider the following reaction: 

What is its ΔS_total? What is its spontaneity under standard-state conditions?

The entropy change of the surroundings (ΔS_surr) for a particular reversible process is –85 J/K. Determine the entropy change of the system (ΔS_sys) for this process.

Calculate the ΔS_univ and predict the spontaneity of the reaction given the following data.

ΔH°_rxn = -56.0 kJ; ΔS°_rxn  = -251 J/K; T = 206 K

Consider the following reaction at 298 K:

Si(s) + 2 Cl₂(g) → SiCl₄(g)

Calculate the following:

a) ΔS_sys

b) ΔS_surr

c) ΔS_univ