Increasing the concentration of barium ions in water will lead to an increase in the overall soluble ion concentrations. Increasing the temperature of water will not affect its solubility in barium salt solutions. A supersaturated solution can be achieved by adding more water to a previously saturated solution, but not vice versa.
Increasing the pH of a barium salt solution will not affect its solubility unless it is changed so drastically that it exceeds 7 on both sides of pH scale, which is highly unlikely. The pure white color and metallic texture that characterize barium salts are likely due to their high reactivity with oxygen, making them one of many forms of oxides. Which barium salt is insoluble in water? The barium salts family which is insoluble in water are all calcium compounds, zinc salts and copper compounds.
Common Misconceptions About Which Barium Salt Is Insoluble In Water :
1. Barium can be dissolved in cold water.
It is true that barium ions are soluble in cold water and will dissolve when added to the water. However, it is not possible to dissolve barium ions in hot water because they do not dissociate into ions in the above water temperature range. Thus, adding a little more cold or warm water will not make barium solution more soluble but recycles the excess of barium solution that was created during the previous addition of cold or warm water. It is always better to add enough hot or cold water for the desired concentration so that there will be no leftover insoluble byproducts.
2. Adding barium salt to hot or cold water will not affect its solubility.
Adding barium salt to hot or cold water will definitely affect the solubility of the solution. The addition of a supersaturated solution of barium ions in hot or cold water is practically impossible because it will result in a violent reaction either in the form of violent explosions, toxic gas formation, or even crystallization. The addition of saturated with excess barium solution would have been one way to reach supersaturated solution condition but this is highly unlikely due to extremely high reactivity of barium ions with oxygen and other oxidizing agents.
3. Adding a condensation reagent to the barium salt solution will result in a precipitate.
Adding of condensation reagent to barium salt solution, usually done by adding sodium sulfide or antimony trifluoride, is not a good way to dissolve a settled and solidified precipitate because the reaction will just lead to precipitation again. The best way is to add strong non-nucleophilic base [such as ammonia or potassium hydroxide], which will react with the insoluble materials of the precipitate and deactivate it.
4. Adding barium salt solution to hot water will cause bubbles in water.
Adding barium solution to hot water will definitely increase the pressure in the vessel containing the hot water and thus cause the formation of bubbles. Adding more and more barium solution to hot water will increase not only pressure but also temperature. Thus, pressure won’t be an issue but temperature will become an issue, resulting in a tremendous temperature decrease inside the vessel after a while. Therefore, it is not possible to create a supersaturated barium salt solution by adding barium salt solution to hot water.
5. Adding barium salt solution to cold water will cause bubbles in the cold water .
Adding barium salt solution to cold water will not affect the pressure inside the vessel because cold water has a very low density, about 0.91 g/cm3 at room temperature, which is 4 times lower than that of hot water. Thus, adding barsium solution to cold water is not as effective as that of hot water because it doesn’t increase the pressure as much. If a reaction occurs at all, it would have been a violent one causing an explosion and formation of toxic gasses. Even if there was no reaction, one could expect to see thin lines of gas escaping from the vessel after some time due to temperature decrease over time.
6. A supersaturated solution of barium sulfate can be obtained by mixing aqueous solutions at different temperatures.
A supersaturated solution of barium sulfate can be obtained by mixing aqueous solutions of different concentrations. However, it is impossible to dissolve barium sulfate with excess amounts of water and thus reach supersaturation due to the high solubility and low volatility of this compound.
Thus, heating up one barium sulfate solution to become super-saturated will do no good either because the addition and mixing of the both super-saturated solutions won’t cause the formation of precipitate anymore while they will just reduce their original concentrations reaching back to their saturated states.
7. Barium oxide, barium hydroxide, and barium carbonate are soluble in cold water.
Barium oxide, barium hydroxide, and barium carbonate are all oxides of the metal barium. They can dissolve in cold water but their solubility decreases rapidly with increasing temperature because these compounds are very susceptible to heat. It is possible to dissolve them completely in cold water but only at extremely low temperatures. In addition, it is important to know that the solid form of these compounds may be anhydrous or hydrated.
