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Medroxyprogesterone is a steroid. However, active drug is its acetate form, medroxyprogesterone acetate, which is sold under the brand name Depo-Provera among others (Wikipedia). Nonetheless, either is hydrophobic, and hence, should have prepared suitable way for administration to have better bio-availability. One of these methods are liposomal preparation (...
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Once $\ce{Ba^2+}$ is eliminated as poorly soluble barium(II) sulfate, there is a solution of soluble copper(II) and zinc(II) sulfates.
Considering this has been done by careful/gradual addition of sulfuric acid, and the fact that both remaining sulfates undergo hydrolysis, the solution is going to be slightly acidic — this is one reason for sodium hydroxide "...
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Hansen Solubility Parameters (HSP) - is the short answer.
Your observation has very much to do with the energy density of the solvents - with the idea that lesser the difference in the energy densities better is the ability of solvent to dissolve the solute. I am very poor at explaining things and not an expert in the matter at hand (please excuse me for ...
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Aspirin has a solubility of ~3 g/L. In addition from a patent by Galat [1]:
Sodium aspirin is almost 1000 times as soluble in water as aspirin itself.
All of the $\ce{NaOH}$ can be assumed to react with acetylsalicylic acid (aspirin) to form the sodium salt. This means the amount of solubilized sodium aspirin is roughly equal to the amount of added $\...
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