Problems with barium sulfide crystals
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I have a sample of barium sulfide that is not very pure, containing 20-30% of water-insoluble impurities. I would like to crystallize some relatively pure BaS from an aqueous solution for analysis. May I ask what methods you recommend? I’m not a professional in this craft field, so I hope everyone can offer me some advice!
Dissolve it in 80-degree hot water; due to the limited solubility, only a supersaturated suspension can be formed. Filter the suspension while it is hot, and evaporate the filtrate in a clean evaporation dish to obtain crystals. Alternatively, place the hot filtrate in an ice-water bath; a precipitate will form in the filtrate. By filtering this precipitate, crystals can be obtained. Because the yield is not high, it may be necessary to repeat the process several times.
Reply to 2# Check work, thank you