The temperature and time required to obtain a homogeneous solution of praseodymium (III) chloride (PrCl3) will depend on several factors, including the concentration of the solution, the stirring rate, and the size of the container used. In general, heating the solution to a temperature of 50-60°C and stirring for 30-60 minutes should be sufficient to dissolve PrCl3 in a solution.
PrCl3 is soluble in water, but the solubility of PrCl3 in water can be affected by the presence of impurities and other dissolved solids. To obtain a homogeneous solution of PrCl3, it is recommended to use distilled water, which has a lower concentration of impurities and dissolved solids compared to tap water.
However, it is worth noting that the solubility of PrCl3 in water is relatively low, so it may be necessary to use a concentrated solution of PrCl3 and a large volume of water to dissolve the salt completely. If a solution of PrCl3 is not forming, it may be necessary to adjust the temperature or stirring rate to encourage dissolution.