Question

which are most soluble and which are the least soluble:

magnesium chloride, 2-pentanol, methane and propane?

Answer 1

The most solulble would be the salt magnesium chloride, because it is an ionic compound and quite polar.

Next would be the 2-pentanol because alcohols are rather soluble is water.

Now, both propane and methane are completely non-polar, but propane would be a little more water-friendly b/ it has more H's than methane, allowing for more Hydrogen-bonding Intermolecular forces between water and itself...so methane is the least soluble.

From most to least, it's a, b, c, d