Iodine is practically insoluble in water, but can be dissolved by a nonpolar solvent such as CCl4, justify this. (Hint: analize intermolecular interactions solute-solute and solute-solvent, and the ΔG of the Mixed solution)

Question

photon336 · Answer

Well to start at the most basic level: like dissolves like. Iodine is non polar and water is a polar molecule right? non-polar solutes will most likely dissolve in non-polar solvents. 
CCL4 and I2 are both non polar.

tatianagomezb · Answer

Great, good so far, What whould you say about the entropy and enthalpy then, since I have to consider Gibbs energy. Thanks

photon336 · Answer

Yeah, my guess is that consider this. the interactions between solute an solvent would not happen in Iodine/ H2O . so i'm assuming that the delta g for mixing would be positive.

tatianagomezb · Answer

Thanks again, I'll look into that.

photon336 · Answer

because think of it; if you had two polar compounds., they would react with each-other and due to intermolecular forces, they would form interactions. My guess is that this would happen spontaneously -delta G.

tatianagomezb · Answer

Right, I'm studying for finals and I didn't think this was what I needed to know. But you made it clear. Thanks again

photon336 · Answer

yeah remember, spontaneity means WILL THIS reaction happen? it doesn't tell you how FAST it will happen.

tatianagomezb · Answer

Makes complete sense. Since there is going to be some interaction between the two.