80 degrees, saturated copper sulfate solution, 310g, 100g water heating evaporation, and then cooled to 30 degrees, the number of lamps can be precipitated where?

Answers:1   |   LastUpdateAt:2012-06-12 14:45:07  

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Wrong when the tender love
Asked at 2012-06-08 20:07:03
80 ° S = 55g , 30 ° S = 25 g I detail the process! !
Answer1LeonaAnswered at 2012-06-12 14:45:07
Earlier : CuSO4110gH2O200g end : H 2 O to reduce this time can be considered as CuSO4.5H2O 100g is the solubility of the solute in 500/11gCuSO4.5H2O (excess) 1375/8gH2O (solvent, a small amount , less the gallbladder, where water) 305/8g therefore, precipitation vitriol 1375/8g- ( 305/8 ) * ( 5.11) g is 154.5g (added: recalculating the solubility CuSO425gH2O100gCuSO4.5H2O25g + ( 90/160 ) * 25gH2O (solvent ) 100 g - (90/160) * 25 new solubility g = [ 25g + (90/160) * 25 g] [- 100g (90/160) * 25 g] * 100)
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