Of these 15 sources, 6 of them fail to specify the copper sulphate's hydration state and 4 of them appear to have swapped the data for the anhydrateĪnd pentahydrate (based on their dissonance with the other 11 sources).

Sciencemadness wiki (physical properties desc.)ĬuSO₄♰H₂O (pentahydrate stated, anhydrate assumed)ĬuSO₄♵H₂O (anhydrate stated, pentahydrate assumed) Wikipedia solubility table and Sciencemadness wiki Temperatures when dehydrated, and the abundance of (highly incongruent) data on its solubility at different temperatures and hydration states, given If this mass of copper sulphate pentahydrate is dissolved in 1 liter, or ~1,000 grams of water, the water:salt mass ratio is again equal toĬopper sulphate was chosen as the subject for this thread because of its relatively simple hydration behavior (as far as I know), stability at high

S ₕ = 200/(0.63923 + 200(0.63923 - 1)/1000)Ģ00 grams of anhydrous copper sulphate dissolved in 1 liter, or ~1,000 grams of water is equivalent to a water:salt mass ratio of 1,000/200 =ģ52.7 grams of copper sulphate pentahydrate (CuSO₄♵H₂O) consists of 225.5 grams of copper sulphate (CuSO₄) and 127.2 grams of water (H₂O). Pentahydrate (s ₕ) at this temperature should be: According to the following formula, the solubility of the Let's assume that the solubility of anhydrous copper sulphate (sₐ) is 200 g/L at 0☌. The molar mass of copper sulphate pentahydrate (CuSO₄♵H₂O) is 249.69 The molar mass of anhydrous copper sulphate (CuSO₄) is 159.61 g/mol. The point of this formula is that the mass ratio between the water and salt should remain constant regardless of the salt's hydration state. Mᵣ is the anhydrate/hydrate molar mass ratio. Sₐ is the solubility of the anhydrous salt in g/L at a given temperature. S ₕ is the solubility of the hydrated salt in g/L at a given temperature. I devised the following formula to compute the solubility of any hydrate (s ₕ) from the solubility of its anhydrate (sₐ) and their molar mass The water of solvation and the water contributed by the salt's water of crystallization. The solubility in water of any hydrate salt should theoretically be proportional to the total dry mass of salt and the total mass of water, including The results of a previous thread I made on this topic were inconclusive and ultimately spiraled into a mess, so I'm narrowing the scope of this post to only look Solubility of copper sulphate compared to its pentahydrateĭespite being an apparently simple topic, the solubility behavior of hydrated salts compared to their anhydrates (and associated anomalies) remain

Cuso4 molar mass