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Steps Toward Solvation

This article explains the steps involved in the solvation process for solids and liquids in liquids. It covers concepts such as expanding solutes and solvents, intermixing, and the factors affecting solubility. The article also explores Henry's Law and provides an example calculation. Additionally, it debunks urban legends about Coca-Cola's cleaning properties.

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Steps Toward Solvation

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  1. Steps Toward Solvation (For solids dissolving in liquids and liquids dissolving in liquids) Process/Energy DH1 = + Expand the solute DH2 = + Expand the solvent DHhyd DH3 = - Intermix DHsol = + or - Depends on the magnitude of DH1, DH2 and DH3

  2. Solubility: the degree to which you can dissolve a solute in a solvent Soluble = at least 0.1 M Ce2(SO4)3

  3. P = kC (Henry’s Law) The partial pressure of the gas above the sol’n The concentration of the gas dissolved in the liquid If the Henry’s Law Constant, k, is 32 L atm/mol, at 3.00 atm partial pressure of CO2 above an aqueous sol’n of CO2, what would be the solubility of the CO2 in the solution? 0.094 mol/L 3.00 atm/(32 L atm/mol) = (molarity)

  4. Coca-Cola Urban Legends: In many states the highway patrol carries tow gallons of Coke in the trunk to remove blood from the highway after a car accident You can put a T-Bone steak in a bowl of Coke and it will be gone in two days. The active ingredient in Coke is phosphoric acid. Its pH is 2.8. It will dissolve a nail in about 4 days! To clean a toilet: pour a can of Coke into the toilet bowl…let the “real thing” sit for one hour, then flush clean!

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