Arrange the following compounds in order of their expected increasing solubility in water: Br2, KBr, toluene (C7H8, a constituent of gasoline).

Question

Accepted Answer

Hello everyone today. We got the following problem given the falling compounds octane, asi tal to hide and our calcium chloride rank them for most to least soluble in water. So first we need to define what Saudi ability is. The ability is a general principle that like dissolves. Like essentially this just means that the more similar. So the more similar the inter molecular forces between our solvent, so between our sol vent and our soul. Ute the higher the sell ability or the higher the chance that it's going to dissolve in that substance. So for this problem, we have our three salutes. Our first one is going to be octane. So octane is our first salute water of course is the solvent. And so we're dissolving octane in water. So octane given the structure As such with eight oxygen's is going to exhibit dispersion forces. London dispersions nonetheless dispersion forces which are the weakest type. And so since water is going to exhibit hydrogen bonding, those two are not similar, they do not have similar inter molecular forces. And therefore this will be considered not soluble. Next we move on to our hotel behind as a saw and that structure is as follows, we have an oxygen double bonded to a carbon and that carbon is bonded to a methyl and a hydrogen. Now we notice that this is going to exhibit what's known as dipole dipole interactions or dipole dipole forces due to that carbon oxygen bond. And so we can say that this is going to be slightly soluble in water because water also will exhibit dipole dipole forces. But its main force is hydrogen bonding. And then last but not least, we have our calcium chloride here as I saw you. And if we examine the structure, we notice that it is an ionic compound, so it exhibits ionic bonding and psionic because it's between a metal which is our calcium and a non metal which is our chlorine and something that's ionic bonding is going to be considered very soluble. In fact, calcium chloride can be seen similarly with sodium chloride, which is table salt and so table salt can readily dissolve in water. So if we were to rank these in terms of from most soluble, we would put calcium chloride as the most soluble, followed by hotel to hide. And then lastly we would have octane and so this would be our ranking. And with that we have answered the question overall. I hope this helped. And until next time.

Arrange the following compounds in order of their expected increasing solubility in water: Br2, KBr, toluene (C7H8, a constituent of gasoline).

Verified Solution

Key Concepts

Polarity and Solubility

Ionic Compounds and Solubility

Nonpolar Compounds and Solubility